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Old 03-04-2012, 9:21 AM
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Default Drill bushing

I made a few drill bushings and seemed to work OK.

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IMG_0384.jpg

Started with a drill bushing that was 9/16". Wanted to have something substantial and not wimpy like a 1/4" that could deflect easily.

Then switched to the 5/8" bushing and then removed all and reamed to 11/16".

Nice and snug.

I first squared the jig with a dial indicator, and centered the mill over the jig bushing with a co-ax indicator. All was pretty square and centered before starting any drilling.

If the hole is off 1/64", with the TM receiver that has the scope rail forward and bored for the barrel, there could be an interference issue. Just something to avoid before actually doing any drilling.

Ed
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