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And here's a photo of the jig itself. The recess is about 0.060" deep, and the diameter of the circle is 1.4".

The "slot" coming out at an angle was machined at the same time and to the same depth as the recess. This allows a spot for my feeler gauge when I want to refernce to the surface.

There's still some more machining to do, so the the 0.060" deep side walls are deep enough that I can use an indicator to get things lined back up again when the time comes.

I also machined a 1/16" groove all around the base of the outside wall so that the part wouldn't get caught in a not quite square corner (between the flat bottom and side walls). Smaller...

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Copyright 2006 by Dave Hylands