80% Arms Easy Jig Mini review, lessons learned, etc.

[DeoreDX]

I did a second lower last week. This one did NOT have the rear takedown shelf milled. Chalk this up as another lesson learned but if you are having to mill the rear shelf make sure the hole you drill for the rear shelf that passes through the rear jig retainer bolt is drilled with a brand new (or at least really sharp) drill bit. If not you will exert enough pressure to drill the hole that you rotate the lower in the jig. I did find a better way to do this after the fact. Take one of the screws and partially thread it through the left side hole just deep enough so it catches the rear takedown pin hole so the lower doesn't rotate but not deep enough so that the threads enter the rear takedown area and get milled away. Problem solved!



BTW... 80% lowers are like potato chips, you can never have only one!

[golfish]

make sure the hole you drill for the rear shelf that passes through the rear jig retainer bolt is drilled with a brand new (or at least really sharp) drill bit. If not you will exert enough pressure to drill the hole that you rotate the lower in the jig. I did find a better way to do this after the fact. Take one of the screws and partially thread it through the left side hole just deep enough so it catches the rear takedown pin hole so the lower doesn't rotate but not deep enough so that the threads enter the rear takedown area and get milled away. Problem solved!

When you say "rotate" you mean your pushing the lower down?

Sounds like a good tip..

[DeoreDX]

When you say "rotate" you mean your pushing the lower down?

Sounds like a good tip..

Yeah. With the top rear bolt out the lower will rotate in the jig with enough pressure from the drill. I didn't feel comfortable tightening the jig so tight it wouldn't rotate.

[Junkie]

Another option is to thread it into the back side of the threaded plate, and into the lower far enough to support it.

I had my jig assembly tightened fairly well, and the whole thing in a vice, and it didn't move.