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1,987 Posts
Discussion Starter · #1 ·
Got bored so posting this thread

Those of you who ever had to drill receiver for trunnion holes know what PITA it could be even with good tools
Usually I did it on a drill press with X-Y wise. Not long ago I broke the wise and was left with no choice but to make something for it.
So I decided to use the mill which is much better when it comes to drilling small holes, has a more stable table. The only I had to do is build a fixture to hold the trunnion. And this is what I came up with. Used a swivel from old monitor mount, long bolt and a fitted aluminum block.
Mounted the jig onto a table, tied up the trunnion. Aligned the bit with one hole, slid the receiver on, drilled the receiver. Took exactly 5 minutes to drill all 6 holes. Perfectly aligned, no drill bit walking, no egging.







 

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airbrushart
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5,514 Posts
Say can I borrow your mill & jig, no just kidding, great job!
 

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former ak builder
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2,574 Posts
Got bored so posting this thread

Those of you who ever had to drill receiver for trunnion holes know what PITA it could be even with good tools
AMEN.

nice jig, man.
 
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