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USER GUIDE
Documentation version 1.1.16
REV 1.5
Prusa i3
Rework
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INTRODUCTION
• Target :
Prupose a visual guide of the dierents steps to build and use a
Prusa i3 Rework.
• Authors of this document :
eMotion Tech – http://www.Reprap-France.com
Hugo FLYE
Quentin CESVET
Anthony BERNA
• Photographics Credits :
Pictures and 3D représentations made by eMotion Tech
http://www.emotion-tech.com
• Sources :
http://reprap.org/wiki/RepRap
http://www.repetier.com/
• Licences :
Prusa i3 : GPL 3.0
is document : CC BY-NC-SA 4.0
http://creativecommons.org/licenses/by-nc-sa/4.0/
• Update :
Last update : 22/11/2016
• Links :
You can found more informations on the following links :
RepRap community : http://reprap.org/wiki/reprap
Repetier-Host soware : http://www.repetier.com/
3D models database : http://www.thingiverse.com/
RepRap
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INTRODUCTION 2
Summary 3
Driver and the rmware installation 4
Transfer of the rmware from Arduino 7
Connection to Repetier-Host 8
Conguration and preset 11
Checking endstop 13
Invert motor’s direction 15
Fan checking 15
HEATED PARTS CHECKING 16
Extruder 16
USING Z SENSOR 18
Checking the sensor 19
Balancing Z motors 20
Z-Axis calibration 21
Auto-Leveling 23
SUMMARY
ANNEX 24
Adaptation of the Start G-code 25
Printing of a piece with Repetier Host 27
GCODE commands 37
Maintenance 38
Recommandations 38
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First :
• Install the Arduino soware (1.0.6 version or lower). You can download it from our website or the ocial Arduino’s website.
Aer that, the RAMPS board must be connected on the Arduino board.
• Connect USB (do not connect the power supply).
• Check if the board is identied by your computer. You can to push on « Windows + Pause » -or go to your compute setup-, and on « Device manager »
on the le. e Arduino Mega 2560 board must appeared in the device list.
System panel of Windows
Device manager
Read the COM port of your Arduino board (Arduino Mega 2560)
Driver and the rmware installation
Note : If Windows 8 or higher is installed on your PC, you should deactivated automatic control of unsigned drivers. It’s possible to nd process about
this on the web.
If it is not regognized, please install drivers manually by doing a right-click on it. Arduino’s drivers is in the Arduino «drivers» folder.
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• Run the Arduino soware from the oce.
Arduino IDE launching
Selecting the card
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• Open Arduino (le/open) the le of your USB drive: Prusa i3 Rework 1.5, and «Marlin.ino ».
• Next, Click on Upload.
Transfer of the rmware from Arduino
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Connect the RAMPS board to the power supply 12v and respect
polarity.
Before to begin this tutorial, you have to get:
• e electronic and mechanic parts (see the assembly instructions);
• e board need to be identied by your computer;
• e rmware is download.
First we are going to settle the host soware (Repetier host) communication.
Interface of Repetier-Host and open of Printer settings
Connection to Repetier-Host
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Choice of the COM port
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Connect Repetier to your 3D printer by pushing on the button «Connect»
Connexion à l'imprimante
Check the message «idle » at the Bottom of the page.
If you have waiting commands, it means that you have connection problem with your printer.
Check the COM port and push on Reset button or reconnect the USB wiring.
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Conguration and preset
Let start to a material checking on your machine.
Manual moving of axis
Push your carriage X and Y to the center of their axis, -if you feel resistance don’t force! -, You only need to unlocking your motors :
Unblocking of motors
Unblocking motors
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For Z axis, move up the extruder for at least 20 mm above the PCB heatbed by turning the two couplers at the same time.
Be sure that axis X stay horizontal to not damage plastic piece.
Now you are ready to move safely.
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To know if your endstop is functional, connect them and check that the red LED switch on when you do a contact.
Emergency stop button
Checking endstop
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Press the X homing and check the X carriage stop to move aer touching the endstop X.
If there is a problem you can press on the emergency stop button to stop motors.
Repeat the operation for Y axis.
For Z axis, we will explain the prober in the h parts («using of the paper»).
X and Y homing
Moving command axis
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Disconnect Repetier Host and all power sources (power supply 12V and
USB).en invert your motor plug on the RAMPS card. Reconnect your
machine.
Repeat the operation for Y and Z axis. For Z axis the positive direction
means a vertical rise.
Activate support fan
If a fan does not work, check the polarity.
Invert motor’s direction
e extruder has two fans. One cool the extruder body and other one
cool the piece. e rst is above is activate when you connect the 12V
supply. e second will be activated automatically or through the manual
control interface (see below).
Fan checking
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Launch the heating of the cartridge heater:
Extrusion
Check if the motor turn in the good direction (do not set up the
lament). Use manual commandsto extrude 10 mm:
10 mm extrusion
PCB heatbed and cartridge heater checking
Note : extruder’s temperature will progressively increase to the targeted temperature (here 200°C).
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If it is necessary, invert the direction connection of the motor connector on
RAMPS board.
Launch the heating according to the sort of plastic lament:
• For PLA: from 200° to 210° and 50° for the PCB heatbed (Cover the plate
with Polyimide for a better adhesion)
• For ABS: from 230° to 250° and 90° for the PCB heatbed, (spread ABS juice*,
on the plate cover of polyimide, with a brush to have a better adhesion)
* ABS juice: Dissolve ABS lament in some acetone to obtain a liquid mixture.
For instance : In a glass, pour 10 cl of acetone and add 10cm of ABS lament,
thicken with more lament if the adhesion is not sucient.
Insert plastic lament 1.75 mm in the extruder by pushing on the Extrudeur Idler
(xed on a spring) to free access to the lament.
When you have reach the temperature, use manual command to extrude.
Check that your hotend have no leak, if it is, it means that you had not well build or tighten your extruder.
Check also that the drive wheel well train the lament continuously and without slippage. In a rst time, you can re-tighten the spring.
Cut the lament extremely beveled to
insert easily your lament in the extruder
Push
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e inductive sensor will allow you to automatically palpate 4 calibration points to correct mounting imperfections.
is only detects metals (detection ~ 1mm for non-ferrous metals (aluminum, ...) and ~ 3mm for ferrous metals (steel, cast iron, ...).
Caution: use of a glass plate is prohibited with the use of the bed of aluminum.
Using Z Sensor
Position the inductive sensor slightly above the nozzle.
approximately 0,5 mm environ
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Step 2 : checking sensor operation
View the feedback (logs) : Position a metal object in your sensor and type «M119» in the command
prompt of «manual control» tab.
Type of response expected in the logs:
Reporting endstop status
x_min: open
x_max: open
y_min: open
y_max: open
z_min: TRIGGERED
z_max: open
is command allow you to check operation of printer’s sensors.
Note: try the M119 command when you do not have a metal part to recover
the «open» mention in z_min.
If you do not have feedback of your inductive sensor, check the orientation of
the sensor connector and a possible false contact on RAMPS card + adapter
board + inductive sensor.
Note: on some sensor model, the indicator light remains on power
supply and not sign detection.
inductive sensor
is button displays Repetier’s
logs
Press this button to make visible
the log Visibility button
Information returned by the
machine (log visibility)
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To reduce the correction of the auto-leveling, it is highly advisable to balance the height dierence between the two Z motors.
Step 2: Balancing Z motors
With the power supply o, push the X carriage to the endstop and turn the coupler until your heating nozzle touches the bed:
Le : en, right :
In manual control, make some upward and downward movement. If you nd that motors struggle to move, adjust the potentiometer of the Z
axis stepstick so that the movements are uid and without missteps.
Step 3: Adjusting motor power
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Note * : standard sheet
of paper (80 grs)
Step 4 : Z-Axis calibrating
1- Initialize X and Y axes by clicking the house icon
3 -Place a paper’s sheet under the heating head.
4 - Using the cursor dedicated to the Z axis, move it down
until the paper is slightly blocked.
What is the target ?
To properly calculate the correction of the auto-leveling we need to determine the dierence of our printhead with
the heating bed when palpated with our sensor.
Note: is dierence is therefore a negative value beacause it will lower the heating head of measurement recorded
up to get the point Z = 0.
Paper *
2 - Send the following GCODE command : G92 Z100
is sets the current Z axis point to Z = 100 so it can move down.
Note: the heat tends to inuence the sensor signals, it is best to calibrate thereof taking care beforehand
that the heating elements are already at target temperature.
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9 - To set the value of the specied gap type the following command :
In our previous example :
M851 Z-0.49
Note: Replacing «-0.49» with the value you received without forget to mention the «-» sign.
10 - Type the «M500» command to save permanently in the memory of your machine.
5 - Type the «G92 Z0» command to set the point Z = 0 of your printer
6 - Using the arrows, move your Z axis 30mm upward, so you will be at Z = 30
7 - Type the «G30» command to perform a probe and detect your metal bed
8 - Here is a typical example of a response in your logs:
Note: For this example, we just measure a dierence of 0.49mm from our printhead
Note: At any time you can use the «M851» command to retrieve the last saved value and modify it to adjust the height of the rst print layer.
e proper height of the nozzle corresponds to the fact that the top of the molten plastic strand either at the same level as the bottom of the nozzle.
is is illustrated by the following scheme:
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e «G29» command launches probe of four calibration points. It is strongly recommended to do an initialization of the machine in the manual control
before this command (or type the command «G28»).
Auto-leveling
G29
e «M500» command save the calibration in the memory of your printer:
M500
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ANNEX
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ANNEX
Adaptation of the Start G-code
Go in the tab« Slicer » and select the slicer« Slic3r». Next click on «conguration», and go in the tab «Printer Settings», click on «Custom G-code».
Aer that, write in «Start G-code» the command below :
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Copy paste the following sequence :
G91; using relative distance
G1 Z20; go to position Z 20
G90; absolute positioning
G28; X, Y and Z homing
G29; Auto leveling
M500; save to EEPROM
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ANNEX
Functionalities for the placement
We will rst choose a 3D model to print. We suggest you to start with a simple object like the «Y Motor», with a fairly large plate surface to
be able to observe the printing of the rst layer (decisive) as comfortable as possible.
IYou can also go to the ingiverse website and nd a simple object to print (cube or another simple objet without diculty).
Also be sure to apply a grip coating (polyimide or blue tape) on the plate to optimize adhesion of the material, this is an important detail
for a successful print.
Printing of a piece with Repetier Host
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Select the tab «Slicer» and do the follow actions :
Note: We will only detail the main parameter of slicing.
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ANNEX
Inll settings
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Speed settings
Saving of « Filament Settings »
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ANNEX
Filament settings
Saving of « Filament Settings »
55 55
55 55
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Extruder settings
Saving of « Printer Settings »
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ANNEX
Slice : e slice transform a virtual polygonal meshed body into
machine coordinates, It take several seconds (depend of the
size and the complexity of the piece). You can follow the
progression of the slice.
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When the slice is nished, you are automatically send on preview’s tab.
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Piece drawn in machines’ path
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Now you can start the print :
Congratulation for your rst print !!
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ANNEX
Ccommandes GCODE
G1 : linear motion (ex : G1 X100 Y100 F3000)
G28 : back to home (ex : G28 X Y)
M500 : save l’EEPROM
M851 : dene «Z Probe Height» value (ex : M851 Z-0.49)
M999 : restart printer
G29 : inductive probe at actual place
G30 : inductive probe at plate’s corners
M110 : Set the current Line Number
M17 : Enable/Power all stepper motors
M410 : Quickstop. Abort all planned moves, stopping the printer.
M24 : Start/resume SD print
M104 S205 : heating the extruder at 205°C and doesn’t wait
M109 S205 : heating the extruder at 205°C and wait until the temperature is reached
M140 S55 : heating bed at 55°C and wait until the temperature is reached
Note : all Marlin’s GCODE at http://www.marlinrmware.org/index.php/G-Code_in_Marlin
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Maintenance
A monthly maintenance of the 3D printer is recommended.
Below are some recommendations:
with the help of a brush, dust the following elements :
• RAMPS board
• stepsticks heatsinks
• all fans and ensure that airow is not blocked
• coldend of the print head
- clean the print head with the help of the guide dedicated to the Hexagon print head, here is the link: :
http://data.emotion-tech.com/highlights_en/Hexagon%20-%20Hotend-guide-v1.1.pdf
- clean the drive wheel’s teeth with the aid of a needle, the end of a tweezers or a cutter blade
- check the tightening of each screw equipping the 3D printer
-lubricate all mechanical transmission elements with multipurpose grease or PTFE based oil spray
(avoid WD40 product that has a tendency to be too aggressive for the mechanical elements)
Recommandations
Shut down the 3D printer :
After printing, if you want to turn o the machine, wait until the print head has cooled to room temperature to
ensure that the print head does not clog.
Transport :
If you have to move the machine by car or other means of transport, it is recommended to unplug stepper motors
o the Teensylu board to avoid damaging components.
Troubleshooting :
A FAQ is available for the Prusa i3 Rework 1.5 on our website in the «Support» section, do not hesitate to consult it
if you are having trouble with your machine, most failures are resolved through this tool, do not deprive yourself !
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ANNEX
CONGRATULATION !
Your rst print is a success !
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Thank you for choosing Prusa i3 Rework rev. 1.5
www.reprap-3d-printer.com
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