Saw Filing Guide |
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Robert Sorby Dovetail SawThis Robert Sorby dovetail saw has just been fitted with a new blade, the old one was buckled and resisted all attempts to straighten it. It is a great little saw and very comfortable to use. It is a good one to try out my new filing gauge.
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Filing Guide OverviewThe basic principle has been around for a long time, I think I first saw it in Grimshaw, which was published in the late 19th Century.
I have made it longer and able to do multiple pitches.
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Cross Section - End ViewCross section of filing guide. The 1/4 inch brass has been slotted and a strip of 20 thou brass shim silver soldered in to act as the guide that will rest in the gullet of the tooth.
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Bottom View of Filing GuideThe brass shim is inlet at an angle to the edge, so that it is about 8 PPI at one end and 14 PPI at the far end.
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Top View of Filing GuideTop view showing markings in PPI, the angle is quite shallow, so the exact positioning isn't all that critical. If you look carefully I have punched the 3 back to front on the 13 PPI mark....
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