Dynamic 490 Installation Manual
MODEL 490
INSTRUCTIONS
Manual Scissor Sharpener
Read these instructions before use.
It is essential that you follow these
instructions to achieve optimum results.
© 2013 EdgeCraft Corp.
CHEF’SCHOICE® MANUAL SCISSOR SHARPENER
The Chef’sChoice® Manual Scissor Sharpener Model 490 is designed to sharpen scissors to professional standards, simply and easily. It can put an exceptionally sharp
edge on your kitchen, household, sewing, and arts and crafts scissors. There are several distinctly different types of scissors, consequently, it is important to read this entire
booklet to optimize your sharpening results.
The Chef’sChoice
to its precision Angle Guides, designed to position the scissor blade securely at a pre-
®
Model 490 Manual Scissor Sharpener owes much of its uniqueness
cise angle against the diamond abrasive plates. Before sharpening your first scissors it
is important to read the following instructions carefully.
IMPORTANT INFORMATION
1. WARNING: EVEN THOUGH ALL SCISSORS MAY APPEAR TO BE SIMILAR, THERE ARE
MAJOR DIFFERENCES AMONG THEM THAT MUST BE UNDERSTOOD BEFORE YOU
USE THIS SHARPENER. THE MODEL 490 WILL SHARPEN MOST, BUT NOT ALL, TYPES
OF SCISSORS. DO NOT ATTEMPT TO SHARPEN HAIR STYLING SCISSORS, PINKING
SHEARS, MANICURE SCISSORS, SERRATED BLADES, TIN SNIPS, OR SCISSORS MORE
THAN 10” IN LENGTH.
The Chef’sChoice
ing knife-edge scissors, as described below. It is essential, however that you follow the
instructions to optimize your results.
2. It is not entirely obvious that the two blades on some scissors can be different. When you
cut with scissors, one blade the anvil blade, is designed to be below the material and the
other blade called, the cutter blade, is above the material. See Figures 1 and 2. Commonly
the blade on top of the material, the cutter blade, does most of the cutting. Referring to the
Figures 1 and 2, note that the cutter blade usually has the oblong finger-hold and a more
rounded tip. The anvil blade has a more pointed tip and a round finger hold.
3. It is very important to be able to identify the special knife-edge type scissors. They
have a cutter blade that is factory sharpened at a very small angle to form a knife-like
edge that is extremely sharp. THE KNIFE-EDGE CUTTER BLADE MUST BE SHARPENED
ONLY WITH THE WHITE KNIFE-EDGE ANGLE GUIDE SUPPLIED WITH EACH SHARPENER. With this type scissor, the knife-edge cutter blade does virtually all the cutting.
Commonly only the cutter blade of this
type scissor has the knife edge. When
that is the case and you can properly
identify and sharpen that blade, sharpening the other (anvil). Only the knife-edge
scissor blade should be sharpened by
the special procedure on page 7. If you
elect to sharpen the anvil blade, use
the sharpening procedure for standard
scissors described in page 5. Do not
confuse these blades. If you have any
doubt about whether you have this type
of scissors, ask your nearest fabric or
®
Model 490 Scissor Sharpener will sharpen most other blades, includ-
Figure 1. Typical right-handed scissors.
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sewing center to help you identify these special blades before you sharpen them. (Most
lower cost and general purpose scissors are not knife edge scissors).
4. During the sharpening process you will need to know how to feel for a burr on the scissor
blade in order to know when sharpening is complete. Feeling for a burr involves running
your finger carefully across (NOT ALONG) the back of the blade as shown in Figure 3. A
burr is a microscopic protrusion of metal produced during the sharpening process under
the edges of the blade which can be felt but is not always visible. It will feel rough and
jagged compared to the smooth finish on the back of the blade.
5. The Manual Scissor Sharpener Model 490 will sharpen either right hand or left hand
scissors without need to disassemble them. If you are left handed you probably have
purchased left hand scissors.* To sharpen right hand scissors, hold the wider, handle
portion of the sharpener in your left hand. With left hand scissors, hold the sharpener in
your right hand (see Figures 5 and 6). However, the orientation of the angle guide on the
sharpener will remain the same with either right or left handed scissors.
6. Before sharpening identify the type of scissor you have. Unless you have scissors designed
for specialized applications, you will have either; (a) standard right handed scissors; (b) standard left handed scissors; or (c) knife edge scissors (which can be either right or left handed).
By far the most popular scissor is standard right handed. Follow the appropriate instructions
below depending on the type of scissors you have.
*You can determine whether your scissors are right or left handed as follows: Open the
scissors and lay them on a table. If the cutting edge of the top blade faces to your right, the
scissors are right-handed. If the cutting edge of the top blade faces your left, the scissors
are left-handed.
GETTING TO KNOW THE CHEF’SCHOICE
MODEL 490 SHARPENER
The Chef’sChoice® Model 490 Scissor Sharpener is designed to sharpen the most
popular general purpose scissors and those commonly used for sewing and crafts.
The Model 490, See Figure 4, consists of the Sharpener, two (2) diamond coated
abrasive pads, and three (3) Angle Guides.
Figure 2. Typical position of the
Cutter Blade and Anvil Blade on
right-handed scissors.
Figure 3. Carefully feel for a burr along
the entire back of the blade. Note arrow
for direction of finger movement when
in contact with blade.
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