VERITAS Mk.II, Руководство пользователя

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15
Operation – Straight-Edged Tools: Chisels and Planes
For an abbreviated explanation of how to use the
system, see
Quick Start in Chapter 3 . Otherwise, the
procedures outlined below illustrate how to use the
system, depending on the condition of the blade.
As you may remember from school geometry, a straight
line is formed from the intersection of two planes. So
it is with creating a sharp blade. In all cases, both the
bevel and the face of the blade must be fl at and polished
to the same degree in order to create the sharpest edge
possible. The methods outlined here will enable you to
quickly achieve an edge beyond razor sharp.
Included with your sharpening system is the Veritas ®
Bevel Gauge. This may be used to check the bevel angle
of any of your tools, from 15° to 45° in 5° increments.
How to Sharpen a New Tool
This procedure applies to tools right out of the package
or those that have never been sharpened on the system.
Step 1: Lapping
a) Remove all lacquer or other applied coating from
the blade, especially the face. See Removing the
Lacquer in Appendix C .
b) Turn the sharpening system so that you can easily
work on the platter with the tool guide out of the
way (see
Figure 16 ).
c) Start with the thinner (3mm) platter on the turntable,
with the 40µ abrasive facing up. Be sure to
secure the platter firmly with the platter retention
thumbscrew. At all times, the power must be off to
remove or secure a platter.
d) With the power on, lap the non-bevelled face of the
blade as shown in Figure 16 . Be sure to apply the
blade to the moving turntable in the manner shown;
face first, cutting edge last. Do not lift up the portion
of the blade extending beyond the turntable. The
purpose is to smooth and polish the face of the blade,
not to create a bevel.
Take care not to overheat the
blade or loss of blade hardness may result . With a
large area in contact with the abrasive, the blade can
suddenly become too hot to hold.
e) Lift the blade from the turntable every 4 to 5 seconds
to check your results; cutting edge first, face last
(opposite to the motion when applying the blade to
the turntable). Stop when the abrasive has created a
smooth, consistently abraded area extending back
at least
1
/
4
" * behind the edge, completely removing
the original manufacturer’s grinding marks that go
right out to the cutting edge in a pattern, as shown
in
Figure 17 . If the abrasion is not quite to the edge
but appears to be close, continue lapping. If the face
appears to be uneven and progress seems to be unduly
slow, restart with 100µ abrasive, and revert back to
40µ abrasive only when a consistent scratch pattern
appears, extending back at least
1
/
4
" behind the edge.
*This may be reduced to as little as
1
/
16
" without any
ill effect, except that you will reach the unlapped
surface sooner from repeated sharpening, necessitating
relapping of the face at more frequent intervals.
Chapter 4
Operation – Straight-Edged Tools:
Chisels and Planes
Figure 16: Lapping. Note: Change the angle at which the
blade is held when lapping with different abrasives.
Figure 17: Tool after lapping.
First step
in lapping. Second step
in lapping.
1
/
4
"
Cutting
Edge
Polished Area Grinding Marks