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Old 9th February 2010, 02:09 AM   #1
TheGimp is offline TheGimp  United States
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Default Drilling Jig

I didn't see any one making anything like this so I thought I'd post it.

I wanted a jig to drill the center hole for a GreenLee punch, and the two screw holes for a tube socket in a 2" square piece of 1/2" Al plate . In addition I figured I could add some positions for heat vent holes, and use a steel bushing as a drill guide ala B-Square with their rifle drilling jigs.

The first two are B7G and B9A. I made two B7Gs and only had six vent holes as I wanted to stay with at least 1/4dia holes and I'd have to move them out to make them bigger.

The B9A vents are offset because I screwed up moving the piece from the vice to the rotary table, so I'll have to make another.

The small piece is the drill guide. I will make a couple more, then I'll will heat treat them.

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Old 9th February 2010, 03:17 AM   #2
TheGimp is offline TheGimp  United States
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Here is a test pattern.

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Old 9th February 2010, 02:36 PM   #3
TheGimp is offline TheGimp  United States
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Image was messed up.

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Hopefully this is better.
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