uBuild-3D MR BOT 280 User Manual

Mr Bot 280

0

Manual

UBUILD-3D

MR BOT 280

Mr Bot 280

Welcome!!!

This instruction manual is designed to help you get started

quickly, safely, using your printer and enjoy the experience of

quality prints it can deliver.

Take a moment to read the instructions in the manual even if

you are a familiar 3D printer user.

Yours sincerely,

The uBuild-3D development and production team.

Mr Bot 280

Contents

Basic information ............................................................................................ 1

Where is what .................................................................................................................. 1

Specifications ................................................................................................................... 4

Printer and Printing properties ........................................................................ 4

Compatible Materials ............................................................................................. 4

Physical dimensions ............................................................................................... 4

Software ........................................................................................................................... 5

Electrical properties ................................................................................................ 5

Included in the box .................................................................................................. 5

Warranty ............................................................................................................. 6

Terms and Conditions of Warranty Validity .............................................. 6

Secure use information ................................................................................ 8

A. Possible dangers and warnings ............................................................... 8

B. Protection against electric shock ........................................................... 8

C. Heat protection ..................................................................................................... 8

D. Fire protection ....................................................................................................... 8

E. Other hazards ......................................................................................................... 9

F. Warning for conversions ................................................................................ 9

Safety signals ................................................................................................................... 9

Preparing your printer ............................................................................... 10

Opening the box ......................................................................................................... 10

Setting up the printer .............................................................................................. 10

A. Assembly of the LCD display................................................................... 11

B. Mounting the spool holder and teflon tube brackets ........... 14

Nozzle and print surface adjustment .......................................................... 17

First print ........................................................................................................................... 19

Software / Installer ..................................................................................... 21

Download .......................................................................................................................... 21

How we use Cura .......................................................................................... 21

Use of Cura ...................................................................................................................... 21

Select a print quality (Profile) ......................................................................... 21

Save the file ................................................................................................................ 23

Mr Bot 280

Preparing the model ............................................................................................ 23

Updates and upgrades .......................................................................................... 25

Other functions ............................................................................................. 25

Replacing the filament ........................................................................................... 25

LCD menus and various operations............................................................. 26

Maintenance ................................................................................................... 28

Terms of Use .................................................................................................. 29

General terms ........................................................................................................... 29

Product prices and delivery costs ............................................................ 29

Product colours ....................................................................................................... 30

Time of delivery ...................................................................................................... 30

Order of products and consumer protection ................................... 30

Personal data protection security .............................................................. 31

Procedure of placing an order through this e-shop .................... 31

Return of products ................................................................................................ 33

Contact ........................................................................................................................... 34

Miscellaneous ........................................................................................................... 34

Product manufacturer’s and e-shop’s liability ................................. 35

Governing law ........................................................................................................... 35

Open Source ................................................................................................... 36

Mr Bot 280

1

Basic information

Where is what

LCD screen

1. Function button

2. Print surface

3. Nozzle

4. Sensor

5. Spool holder

6. Teflon tube

7. Stop (Press continuously for 1-2 seconds)

Mr Bot 280

2

1. Power supply cable

2. USB cable

3. Operating switch (ON/OFF)

4. Led operating switch (ON/OFF)

Mr Bot 280

3

1. Nozzle temperature

2. Print surface temperature

3. Fan Mode

4. Head position in the print area

5. FeedRate

6. Print progress

Mr Bot 280

4

Specifications

Printer and Printing properties

Print Area
Print Volume
Print plate leveling process
Print plate printing temperature
Extruder printing temperature
Top Print Speed
Average Print Speed
Print head travel speed
Layer Thickness

Feader type (extruder)
Positioning accuracy (X, Y, Z)
Nozzle heat up time
Print plate heat up time
Operating sound

275 mm x 275 mm x 275 mm
20,800 cm3
Sensor auto bed leveling
50 °C to 120 °C (heated borosilicate glass)
160 °C to 260 °C
150 mm/sec
50 - 70 mm/sec
Up to 250 mm/sec

0.05 mm to 0.32 mm (with 0.4 mm default
nozzle)
Geared stepper motor

12.5, 12.5, 2.5 microns
~1,5 minute
~1,5 minute for 70°C, ~3,5 minute for 110°C
57dBA

Compatible Materials

PLA, PLA/PHA, ABS, HT, PETG, XT, NGEN, NGEN_FLEX, TPU,TPE, NYLON,
WOODFILL, CORKFILL, GLOWFILL and more.

Filament Sizes
Print technology
Print system
Filament included

Standard 1,75 mm
Fused Deposition Modeling (FDM)
Open filament system
PLA spool 750gr (random color)

Physical dimensions

Overall Dimensions
Operating Dimensions
Weight
Shipping box dimensions
Shipping weight

52 cm x 54 cm x 56 cm
71 cm x 64 cm x 66 cm
20 Kg (without filament spool)
57 cm x 60 cm x 60 cm
25kg

Mr Bot 280

5

Software

Software
Supported Operating Systems
Supported file types
Connectivity

Cura
Windows
STL and OBJ
SD card (included), USB cable

Electrical properties

Power Requirements
Power Output
Power consumption

100 - 240 VAC
500 Watts 24 Volt 21 Amp
416 Watts

Included in the box

Mr Bot 280 3D printer

Quick Setup Guide

Spool of filament

Calibration sheet

SD Card

Power cord

USB cable

Spool holder

LCD and support components

PTFE tube and support components

Glue stick

Bottle with bearing lubricant

Tools (1.5mm, 2mm, 2.5mm, 3mm, 4mm hex key and 6mm wrench key)

Mr Bot 280

6

Warranty

The products sold by this e-shop come with a two-year warranty. The warranty
period starts from the delivery of the products to the consumer. This e-shop
or/and duly authorized persons will correct and/or repair any failure or
malfunction of the sold products or their parts, within a reasonable time period
and in accordance with the following terms and conditions.

Terms and Conditions of Warranty Validity

A. In case a product exhibits signs of defect, failure or malfunction the
consumer is advised:

1) To notify this e-shop promptly and in any case before the end of the
aforementioned warranty period.

2) To supply the proof of purchase.

3) To supply all the relevant information concerning the nature of the defect,
failure or malfunction to this e-shop (or/and to any duly authorized persons who
will correct and/or repair any failure or malfunction of the sold products or their
parts), promptly and in any case before the end of the aforementioned warranty
period.

B. The consumer is kindly informed that:

1) The consumer takes full responsibility for the transport of the product to
and from the facility in which the technical evaluation/check, service and/or
repair of the product will be conducted. The aforementioned facility will be
indicated to the consumer by this e-shop (or/and by any duly authorized
persons who will correct and/or repair any failure or malfunction of the sold
products or their parts).

2) This e-shop (or/and the duly authorized persons who will correct and/or
repair any failure or malfunction of the sold products or their parts) will
determine, within a reasonable time period, the suitable remedy for the failure or
malfunction of the sold products or their parts.

Mr Bot 280

7

3) According to the applicable law and depending on the unique
characteristics of each situation, the warranty may consist in repair, replacement
of parts or total substitution of the product.

4) This e-shop will bear the costs of the repair, replacement of parts or total
substitution of the product.

5) Any defective, damaged or replaced parts or products will become
property of this e-shop.

C. The aforementioned warranty does not cover:

1) The consumable products coming with the product or its parts.

2) The wear/damage and/or malfunction which has occurred because of the

product’s normal operation and use. Indicatively, the warranty does not cover

such wear/damage and/or malfunction of the moving parts, control panels or
elements interacting with the product operation.

3) The wear/damage and/or malfunction caused by inappropriate, abusive
or neglectful use of the product or caused by accidents. Indicatively, the
warranty does not cover such wear/damage and/or malfunction caused by a
fall, transport without the use of the appropriate packaging or abusive use of
sharp or cutting elements.

4) The wear/damage and/or malfunction caused owing to the consumer’s
non-compliance with the relevant operation and maintenance manual(s).

5) The wear/damage and/or malfunction caused owing to any unauthorised
interference with, modification, alteration or repair of the product.

6) The wear/damage and/or malfunction caused owing to voltage disorders
(e.g. voltage fluctuations or instantaneous blackouts).

7) The wear/damage and/or malfunction caused owing to the exposure of
the product to damaging conditions such as to extreme weather conditions,
humidity, floods, fire, chemicals, corrosion, oxidation, spillage of liquids or food
etc. and in general to any harmful circumstances.

8) The wear/damage and/or malfunction caused owing to the use of
software different from the one recommended by this shop or modified or
altered.

9) The wear/damage and/or malfunction caused owing to the use of printing
materials not recommended by this e-shop.

Mr Bot 280

8

Secure use information

A. Possible dangers and warnings

Your printer has moving parts as well as heated parts. Always be alert to
potential dangers when the printer is on.

B. Protection against electric shock

Do not open the electronic parts of the printer when it is in use. Before opening
the electronic parts panel, always close the printer and remove the power cord
from the electrical outlet. After that, wait five minutes before removing the
electronic components chassis.

C. Heat protection

Do not touch the brass nozzle and the above metal parts when the printer is in
operation as these parts are hot and there is a risk of injury. Allow a reasonable
amount of time to cool after work is completed before touching. This time may
in some cases be 20 minutes. Do not touch the plastic as it extrudes from the
nozzle. The plastic is hot and can stick to the skin causing burns. Also, the print
surface may be hot enough to cause a burn.

D. Fire protection

Do not place flammable materials or liquids on or near the printer when plugged
in or in use. Also, materials such as liquid acetone, alcohols or other liquids can
produce flammable fumes. Do not touch the nozzle with flammable materials
during printing, as this may cause a flame.

Mr Bot 280

9

E. Other hazards

Do not touch the moving parts of the printer when it is in use. If you have long
hair or clothes, be careful not to get caught on the moving parts of the printer.

You are not allowed to use the printer in people under the age of eighteen
without adult supervision. There are small objects in the printer that small
children can swallow.

F. Warning for conversions

At uBuild-3D, we respect your freedom to make modifications to your printer.
However, the warranty provided does not cover damages caused by
modifications or attempts to modify your printer.

Safety signals

The following stickers have been placed in the printer in areas that are
considered dangerous to warn the user of upcoming injuries.

Risk of burns

Caution danger

Mr Bot 280

10

Preparing your printer

Opening the box

The uBuild-3D Mr Bot 280 printer is very well packaged in a five-card carton and
foam-protected polyethylene.

Open the box and remove the protective cardboard with polyethylene foam.

Lift the printer with your hands as shown below.

Setting up the printer

After removing the packaging, to operate your printer you only need two steps,
a) assembling the LCD display, and b) installing the spool holder. Your printer
settings are entirely based on the relevant function menu.

Mr Bot 280

11

A. Assembly of the LCD display

What you will need for the assembly:

1. Allen key 2mm

2. Allen key 2,5mm

3. LCD rear panel 1x

4. LCD display (pre-assembled) 1x

5. Rectangular sheet metal

6. M3x6mm button head screws 3x

7. M4x6mm button head screws 3x

8. M3x6mm countersunk screws

Mr Bot 280

12

Step 1

Locate the holes on the LCD rear panel
(5) before you proceed to screw the
rectangular sheet metal.

Step 2

With the M3x6mm half-rounded head

screws (2), screw the LCD’s rear panel

(5) with the rectangular sheet metal.

Step 3

Locate where to attach the sub­assembly under the printer and screw it
in place with the M4x6mm half­rounded head screws, as shown in the
photo.

Mr Bot 280

13

Step 4

Your semi-assembled printer should
look like in the photo.

Step 5

Connect the numbered ribbon cables
to the corresponding numbered plugs
on the back of the LCD display.

Step 6

Screw the pre-assembled part of the
LCD display to the printer's sub­assembly with the three M3x6mm
screws (4).

Mr Bot 280

14

B. Mounting the spool holder and teflon tube brackets

What you will need for the assembly:

1. Teflon tube bracket 1x

2. Teflon tube bracket with pneumatic connector 1x

3. Teflon tube 1x

4. Allen key 2,5mm

5. M4x6mm button head screws 4x

Mr Bot 280

15

Step 1

With the M4x6mm half-rounded head
screws, screw the teflon tube brackets
to the right of the printer. The bracket
with the pneumatic connector goes to
the lower position (see circle).

Step 2

Pass the tube from the top bracket and
slide it down.

Step 3

Push it into the pneumatic connector as
far as it goes.

Mr Bot 280

16

Step 4

Connect the other end of the tube to
the extruder's pneumatic connector.

Step 5

Mount the spool holder. First diagonal
and up, as in the photo, so the top
bracket of the spool holder passes from
the center hole, and then slide down so
the two little brackets attach with the
two rectangular holes.

Mr Bot 280

17

Nozzle and print surface adjustment

After the assembly of the LCD display and the placement of the spool holder,
you need to adjust the correct distance between the nozzle and the printing
surface.

What you will need:

1. Calibration sheet 1x

Note:

The first time you will use the
calibration sheet, remember to fold it
up at the dotted lines. This way it will
be easier to move it back and forth
with your fingers.

Mr Bot 280

18

Step 1

Connect the power cord to the printer
and then to the wall outlet. Start the
printer with the "POWER" button on the
left of the printer and wait until this
image menu appears.

Step 2

To access the menu, press the LCD’s

knob and turn clockwise or
counterclockwise.

Step 3

Access in the basic menu you will find
the "Calibration" downwards. Select it.

Select the "Yes" command and then the printer setup program will start. When
the print head completes its movements and goes to the center of the print
surface, you will need to take some steps to complete this section.

Mr Bot 280

19

• Place the "Calibration sheet" included in the package between the nozzle
and the print surface.

• Turn the LCD’s knob. Counterclockwise the head descends and clockwise
rises.

• At the same time, slightly move the "Calibration sheet" back and forth until
you feel a slight resistance as the paper is being pressed by the nozzle.

• The properly adjusted distance between the nozzle and the print surface is
when you feel a slight friction of the nozzle pressing the "Calibration sheet".

• When you select the appropriate distance, press the LCD’s knob to finish
the calibration process.

The printer is ready for use!

First print

The first step you need to do is to make sure the glass is clean, and then load the
printer with the filament.

Step 1

Before placing the filament spool on
the side of the printer, cut with a
scissors or with a pliers diagonally the
filament.

Mr Bot 280

20

Step 2

Then put the spool in place and pass
the filament from the teflon tube until it
finds a strong resistance.

Press the button to go to the main menu, select "Print" or "Quick settings", then
"Change filament", "Load" and wait for the temperature to reach the desired
level. With the continuous sound, after the temperature reached the desired
level, push the material toward the teflon tube so that the motor can snap it
more easily, and at the same time press the LCD’s knob. Wait a few seconds
until you see some of the material coming out of the nozzle. Press the knob once
more to stop the material from coming out.

Before you start printing, preheat the print surface for three to four minutes. In
the main menu, select "Preheat", then "Preheat PLA / PHA" and "Preheat bed".

Now you are ready for your first print. In the main menu, select "Print" and then
"Print from SD". Choose a ready-to-print file, and start.

Have a nice print !!!

Mr Bot 280

21

Software / Installer

Download

You can download uBuild-3D and Cura installer from here. After downloading,
run the installer and follow the installation wizard's steps to complete the
installation.

How we use Cura

Use of Cura

Together with the uBuild-3D installer, the Ultimaker Cura software is
automatically installed.

Select a print quality (Profile)

After loading the model, you can select the print quality. At the top right, in the
settings panel, you will find the Material option and the print quality option below
(Profile).

When you use Cura for the first time, it will automatically show the simple
function. Start by selecting a profile.

 Fast Quality (0,3mm).
 It prints quickly with slightly visible layers.
 Normal Quality (0,2mm). The most common print quality.
 High Quality (0,1mm). High quality prints.

Mr Bot 280

22

 Material selection
 Profile selection

 Infill density

 Support material
 Bed adhesion

 The infill depending on the quality you select will change according to the

suggested settings. We use it to have a durable model, but also to make
some filament saving.

 Support is selected in cases where we have overhanging parts of the

model. It will prevent the model from sagging or printing mid-air. It will
create support where needed.

 Build plate adhesion will create an additional layer of material that will

provide more hold on the print surface. We use it on models with a small
base or models where the base is narrower than the rest of the model,
such as Vases, so that they do not detach when printing.

Let Cura to complete the slicing procedure. In the bottom right side you will find
information about the printed file, such as print time and quantity of filament
used. Next you can save the file. Note: the print time may be different from the
one shown.

Mr Bot 280

23

Save the file

After Cura has sliced the model, you can save it on the SD card. Otherwise, you
can keep the file on your computer.

1. Connect the SD card to your computer. If the memory card has not been

used before by the computer, an installation may take place. Wait until this
process is complete.

2. Press the arrow on Save to Removable Drive at the bottom right. There you

have an option to save the file to your computer or save it directly to the
SD card. We recommend that you work with the SD card.

3. Securely remove the SD card from your computer, place it in your printer,

and you are ready to print.

Preparing the model

Cura has all the tools you need to prepare your model before printing. The tools
are listed to the left side of the screen.

Move tool

By selecting the model automatically
opens the tool.
You can move it either by click and
drag, or by moving the X, Y, and Z
axes.
Attention! If you set a negative value
on the Z axis, remove part of the
model base.

Scale tool

You can modify the size of the model
either numerically or scale percentage,
or simply pull the "handles" on the three
axes.
You can make Uniform Scaling or Snap
Scaling.

Mr Bot 280

24

Rotate tool

By click and drag on the circle of each
axis you rotate the model at your
discretion. At the same time, the
rotation degrees appear next to the
mouse.
By selecting Snap Rotation you
choose whether the model will be
rotated by one or fifteen degrees.

Mirror tool

By selecting this tool six arrows will
appear. Two on each axes. With this,
you can mirror the model on the X, Y
and Z axes.

View mode

By selecting the last tool you have the
option to view the model in its solid
form, such as the file. This allows you
to preview the correctness of your file.
Layers allows you to inspect all
aspects of the print before execution.
By click and drag on one of the circles
you can see the whole process of
printing in detail.

Mr Bot 280

25

Updates and upgrades

By installing Cura on your computer, an updater was installed. You will be
notified if there are new versions of your printer’s firmware or for Cura.

For updating the firmware you need to connect your printer with the USB cable
that was given and follow the uBuild-3D updater steps.

Other functions

Replacing the filament

The filament replacement process is done by selecting the relevant "Change
filament" menu, which can be found within the "Print" or "Quick settings" menu
commands. By selecting it you will see the following options: "Change filament",
"Load" and "Unload". "Change filament" makes all the "Unload" and "Load"
commands in the above order in case you want to change your existing filament
spool. With the “Load” option, you can load the filament if there is none, and with
the "Unload" option you can remove the existing filament.

The “Change filament” steps are as follows:

1. Select the "change filament" in the main and secondary menus and wait
until the temperature reaches the desired level. Then the material inside the
head will be removed. The unload of the filament is completed with a single
sound.

2. Pull the filament by turning the filament spool until it is completely
removed from the teflon tube.

3. Install a new filament spool, cut diagonally the filament and pass it from
the teflon tube until it reaches its end.

4. Press the LCD’s knob once, the sound stops. At the same time, push the
material until you feel the printer motor pulls it.

5. Wait until you see material extruding from the nozzle and press the button
to complete the “filament change” step. The material will stop extruding from the
nozzle. Then the “filament change” will be completed. A short tone will be sound.

Mr Bot 280

26

LCD menus and various operations

In the main menu you will find the following options:

 Preheat
 Print
 Quick settings
 Position
 Extruder
 Calibration
 Advanced settings

In "Preheat" you can choose the material you are interested in and preheat either
the nozzle or the print surface with the pre-loaded temperatures.

The PLA/PHA pre-heat setting for the nozzle, can also be used for PETG, XT and
some FLEX materials.

The HT/ABS pre-heat setting for the nozzle, can also be used for NGEN and
NYLON materials.

In "Print" you can pause printing "Pause print", eg to insert a nut. You can stop
printing "Stop print". And you can set the fan speed "Fan speed%".

In "Quick settings" you can increase or decrease the speed of the print with
"Speed multiplier".

With "Babystepping" you can change the nozzle's distance from the print
surface with minor movements. Turn counterclockwise to lower the nozzle down
and clockwise to climb upwards. The babystepping correction is not saved after
the end of the print.

If you have done the initial calibration but you are not completely satisfied with
the result of the first layer, for example, the lines are too tight or sparse from
each other, you can manually change the distance between the nozzle and the
heated bed with the "Z offset".

Mr Bot 280

27

Successful first layer

Nozzle too close

Nozzle too far

By increasing the number, we reduce the distance. We use it when we have a
sparse first layer. While reducing the number, we increase the distance. We use
it when we have a compressed first layer. Important! This setting cannot be
performed during printing.

The "Tape selection" option allows you to choose between "Glass", "Kapton
tape" and "Blue painters tape". Here you can choose the type of tape you have
on the print surface and automatically change the nozzle distance from the print
surface without affecting the saved distance. With the option “Glass”, you adjust
the nozzle distance exactly as it was before the use of a tape.

In "Position" we can move all axes and the extruder manually as well as homing
them.

In "Extruder" you are able to preheat the nozzle and/or the print surface at the
temperature of your choice.

In "Advanced settings" you have to do with changes in speed, acceleration, etc.
It is not recommended to change these settings by inexperienced users.

Mr Bot 280

28

Maintenance

Below is a table showing the maintenance frequency. We recommend that you
follow the maintenance table for optimal operation of your printer.

Beware! Maintenance is performed when the printer is shut down and the power
cord has been removed from the electrical outlet.

Frequency

Actions to be followed

Daily

Keep the printer clean of dust, in a dry, cool place.
Store the spools in an airtight bag and in a cool place.
Clean the residues of the filament from the printer.

Weekly

Clean the glass.
Clean the nozzle.

Monthly

Clean the fans from any dust.
Clean the bearing rails with a clean cloth and lubricate with 1-2
drops of oil.

[1]

Clean the filament feeder "gear" on the top of the print-head of any
plastic residue.

[2]

Quarterly

Check that the screws are tightened.

[3]

Check that the plugs of all the cables in the print-head are well in
place.
Check the belts to be well tightened.

[4]

[1] The oil supplied for lubrication of the rods/rails is sewing machine oil.

[2] To be able to clean the filament residues from the feeder “gear”, you must

first remove the motor’s metal cover. Then clean any residues with compressed

air.

[3] Do not over tighten the screws. The threads can break down.

[4] The properly stretched belt will make a similar sound like a guitar string.

Mr Bot 280

29

Terms of Use

General terms

The webpage www.ubuild-3d.com hosts an electronic shop, which is the online

presence of the company under the name “A.Sygouros- A.Maragos General
Partnership” (Tax Reg. No 800674070, D’ Piraeus Tax Office). The company's seat

is in Piraeus, Attica (29, Androu street).

This e-shop is intended for all internet users who are interested in being directly
informed about the products offered on the e-shop and in ordering these
products online, provided that there is sufficient stock.

The present terms fully comply with the current European and Greek legislation,

while users acknowledge the company’s right to modify any provisions of the

present terms to the extent that such modification would neither affect our
legally binding obligations nor affect any completed transactions.

Website users acknowledge that they have read the present terms, agree and
undertake to comply with them.

Product prices and delivery costs

All product prices are in Euros and are inclusive of VAT 24%.

The delivery costs are covered by the buyer and vary according to the

recipient’s residence. The buyer will be informed about the delivery cost within

10 working days from the placement of the order and the products will be
despatched only upon the buyer’s confirmation.

Mr Bot 280

30

Product colours

Actual product colours may be slightly different from colours shown on this e­shop.

Time of delivery

The products will be dispatched within 20 working days from the placement of
the order. The estimated time of delivery is 30 working days from the placement
of the order. This e-shop reserves the right to modify the above estimated time
of delivery. In such case, the buyer will be notified of the estimated time of
delivery within 10 working days from the placement of the order and the
products will be despatched only upon the buyer’s confirmation.

Order of products and consumer protection

By placing an order through this e-shop, the user enters into a distance selling
agreement, which is governed by the Greek Law 2251/1994, as modified.

According to the Greek Civil Code, the user of this website may place a valid
order provided that they are legally capable, at least eighteen years old and not
placed under judicial guardianship concerning the entering into sales
agreements. Representatives of legal entities may also place orders. This e-shop
reserves the right to raise claims deriving from orders placed by legally
incapable persons against their supervisors or guardians.

The distance selling agreement is concluded only upon the acceptance of the
placed order by this e-shop. This e-shop reserves the right not to accept any
placed order or to impose special terms regarding the transportation and
delivery of the products. In the above cases, the user/ buyer will be informed by
this e-shop via e-mail within 10 working days from the placement of the order.

Mr Bot 280

31

Personal data protection security

You will be asked to provide us with some personal data (e.g. full name, delivery
address, phone number, email address) for the purposes of the transactions
which are performed through this e-shop.

This e-shop has adopted all necessary measures in order to secure its
costumers’ personal data and transactions and uses encryption method …. to
prevent any unauthorised access to personal data. This encryption method
secures all stages of the transaction and the transfer of personal data to and
from our website www.ubuild-3d.com. During the procedure of payment by

credit card, the relevant data are registered directly into the associate Bank’s

database system.

This e-shop shall process these data in accordance with article 7Α par. 1 (b) of the
Greek Law 2472/1997, in order to complete the order placed by the users and
shall in no way disclose, publish or sell these data to any third parties, except in
case a legal procedure regarding the withdrawal of confidentiality is initiated (L.
2225/1994) or in compliance with other obligations arising from the national
implementation of European Directive 24/2006.

In the case of payment by credit card, the information disclosed to the relevant

bank (e.g. the credit card number) shall be directly registered into the Bank’s

secure website and not into our database, thus ensuring the highest possible
level of security.

Procedure of placing an order through this e-shop

For the Order:

You shall fill in the special form with the necessary data in order to enter into the
sales agreement. In order to send your request for the order to this e-shop and
for the completion of the order, you need to accept without reservation the sales
agreement terms and the terms of use by clicking the "ACCEPT" button.

Mr Bot 280

32

You are solely responsible for the correctness and legitimacy of your data, which
are disclosed to this e-shop only through your statement.

Payment methods:

1. By charging your credit card.

Visa, MasterCard and Diners credit cards are accepted. In the case of product
payment by credit card, all the necessary measures for secure transactions shall
be taken and all credit card holders shall be subject to checks in order for their
personal data to be verified.

2. By using the PayPal system.

In the case of product payment via PayPal, all the necessary measures for
secure transactions shall be taken.

3. Paying cash on delivery (for Greek residents only) on the moment of the
products delivery.

Upon sending the order form, the consumer shall receive an online copy of their
order, which may be saved.

All prices shown in the relevant catalogues under each product include VAT
(24%), while www.ubuild-3d.com reserves its right to modify product prices
without having the obligation to notify the consumers.

Notes:

During the order procedure, you will be asked to provide your full name and
surname, the address for the delivery of products, your phone number, your
email address and, in case you choose to use your credit card as a payment

Mr Bot 280

33

method, you will be asked to provide the card number, its expiry date, as well as
the 3-digit security code of your card.

The charge will be made upon the check of the credit card’s validity, the data

authentication and the credit limit availability, so that the value of your order is
covered; the retail sale receipt will be send to you via e-mail upon the
completion of the order and the payment. In case the relevant Bank or the
relevant system refuses to process the transaction, the purchase cannot be
completed.

Non EU-Customers shall be subject to any charges that may arise from
exchange rate differences, customs clearances etc., for which this e-shop shall
bear no liability.

Return of products

The buyer has the right to return all or some of the ordered products within a
time-limit of 14 days from the date of receipt. In case the reason for the return is
our e-shop’s wrong conduct (e.g. delivery of other than the ordered product,
defective product), we shall bear the cost of the return.

In any other case you shall solely bear the cost of returning the product.

The products should be returned in perfect condition, in their original packaging
and with their special tags intact. The sales receipt shall be included in the return
package.

The consumers will find in the package of the ordered product the special
"return form", which they can use (without being obliged to do so) in case they
wish to withdraw from the distance selling agreement, which they have
concluded with this e-shop. This return form facilitates and expedites the
procedure of withdrawal from distance selling contracts, which have been
concluded in any EU country. Return shall be accepted solely upon approval on
behalf of this e-shop.

Mr Bot 280

34

In case of product return, and depending on the payment method of your order
and the shipping method of the returned product, refund of payment shall be
concluded within 14 days from the date our company receives the products. The
refund includes the initial delivery cost.

All products returned to our e-shop’s storage undergo extensive quality control.

With the exception of defective products the return of products is not possible in
case the buyer has requested, upon a special order, the personalization of the
ordered products, so that the latter have special features and specifications
according to the specific buyer’s special needs.

In case you wish to return any purchased products, the products to be returned
must be sent to the following address:

Androu 29, Piraeus, Pc: 18541, Greece.

Contact

In case you wish to contact our customer service department, you can send us
an e-mail at [e-mail]

Miscellaneous

This e-shop reserves its right to modify these terms of use at any time. The new
terms will be announced on the website within reasonable time. In any case the
terms of use that apply to each user/consumer are those which are posted on
the website at the time of their order.

Mr Bot 280

35

This e-shop also reserves its right to interrupt at any time and without notice,
partly or in whole, the provision of the website’s services.

In any case, not exercising any of the rights stemming from the e-shop’s terms of
use does not constitute a waiver of these rights.

Product manufacturer’s and e-shop’s liability

The manufacturer of the products available for purchase on this e-shop, as well
as the e-shop itself, shall not be liable for the items produced by the purchased
products (e.g. three-dimensional objects printed with or without the use of the
relevant software or code) or the purpose, mode and potential implications of

the above items’ use. The buyer/consumer shall be solely liable for the items

produced by the purchased products and for their proper use as far as place,
time, cause and objective are concerned. The buyer/consumer who uses the
items produced by the purchased products undertakes the legal obligation to

abide by the safety rules and to fully respect their fellow citizens’ life, health,

bodily integrity, peace and quiet. With the exception of persons under the close
supervision of a legally fully capable adult, the use of the purchased products by
minors, persons placed under judicial guardianship and persons who are, in
general and for any reason, incapable of protecting themselves or others from
potential dangers arising from the use and operation of the products available
for purchase on this e-shop and/or the items produced by the purchased
products is explicitly forbidden.

Governing law

The present contract shall be governed by and construed in accordance with
Greek Law and European Law, as the latter has been incorporated into the
former. The Courts of Athens shall have exclusive jurisdiction to settle any
dispute or claim between the user/consumer and the company arising out of or
in connection with the website’s services or for any other reason.

Mr Bot 280

36

Open Source

Open Source refers the way of developing software while the code is publicly
available. Its target is the development and the debugging of the code by us and
any user of the software. uBuild-3D adopts the principles of Open Source, that is
why it provides at GitHub ( https://github.com/ ) the code used in our printer Mr
Bot 280.

Open Source philosophy:

• Transparency, source code is available to anyone

• Participation, anyone can participate to the development and the

debugging of the project

• Co-operation, development is a teamwork

Our printer, Mr Bot 280 functions, using modified version of Marlin firmware
(http://marlinfw.org/) version 1.0.2. Marlin is also an Open Source firmware and
we attend the rule that dictates. Marlin is published under the GPL license. That
means that any user must publish any version either modified or unmodified.

We, at uBuild-3D, do publish our source code! Users can have access to the
source code of Mr Bot 280 firmware, in order to modify and use it at their printer
by their own risk. Any improvements and/or fixes are welcome at uBuild-3D and
we are glad to discuss them with you at our blog and email.

uBuild-3D suggests Cura Slicing Software 2.6 by Ultimaker
(https://ultimaker.com/) as software for 3d model preparation. Cura is an open
source software and it is redistributed and installed freely by uBuild-3D through
our installer. Cura is distributed under the AGPLv3 license, which actually has no
difference with GPLv3 license (http://www.gnu.org/licenses/gpl-3.0.html), with
the exception that network users are obliged to publish the source code. The
source code of Cura software is available by Ultimaker. uBuild-3D, uses an
unmodified version of Cura but provides the software settings of Mr Bot 280 for
free.

We, at uBuild-3D, believe to the principles of Open Source and encourage users
participation in order to develop and improve our products.