Granberg 106b jig, Filing a 28" chain in 3 minutes with a stump vise.
Автор: George Lawrence
Загружено: 2013-04-21
Просмотров: 63828
I am filing a 28" chain with 30 cutters, full skip sequence, 2:58 min using a sump vise on a four foot stump which gives solid support. The Granberg 106b jig maintains the angles and cutter lengths. Working from the front of the bar enables me to see the face of the cutters so I can check for complete sharpening. I am not counting strokes. By filing up to the file stop screw, good cutter length accuracy is maintained. Switching between left and right cutters requires the down filing angle and top plate angle to be switched as shown half way into the work. Average time per cutter is 6 seconds with installation time included. Time per cutter will be a bit faster for regular sequence chain as the chain is moved less per cutter. I have put a small dimple on the bar for the body screw of the Granberg to stabilize the jig.
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