I also frequent rimfirecentral on occasion and I have noticed they have a jig going around for drilling the rear cleaning hole in a 10/22. I have been considering an 80% AR build and thought this might be a good idea. If I buy one it will be for one or maybe two lowers and then get thrown in the closet.
Of course, the ar-15 jigs are a set, costs a little more, is a little more complicated, and TFL is probably a little more open of a forum.
I was thinking to start it off with a bit of a group buy for the jig and then to keep it rolling after the original buyers are done.
Also wondering about the various jigs and their compatibility with different 80% receivers.
The two I like so far are: