SEPA Milling Party?

[Berncly]

I was under the impression that the mag well and area where the FCG went had to be milled out. What companies 80% lowers are you using?

Was that for me?
I think everyone will be bringing whatever lowers they have, probably several different manufacturers.

[streaker69]

This could be handy too: https://www.thingiverse.com/thing:3351478

[t1066]

It's using a circular drill to remove as much as possible, then using the end mill to remove the rest to create a rectangular cavity more or less.
You end up with many curved triangular sections along the walls that need removal, and the floor of the cavity needs to be flattened.

If the mill is tight enough, I'd probably prefer to scribe the limits using the jig and just mill out the cavity directly. But I'm not sure how well I can do that with a lathe with a milling attachment.

On my mill, if I scribed the limits of the cavity, I'd rough it out, leaving about roughly .025" extra on the walls, the mic the walls and cut to size. It would probably take longer per person, but you'd get a nice finish and a good fit.

But it sounds like there are several different styles of what needs to be milled.

[Berncly]

If the mill is tight enough, I'd probably prefer to scribe the limits using the jig and just mill out the cavity directly. But I'm not sure how well I can do that with a lathe with a milling attachment.

On my mill, if I scribed the limits of the cavity, I'd rough it out, leaving about roughly .025" extra on the walls, the mic the walls and cut to size. It would probably take longer per person, but you'd get a nice finish and a good fit.

But it sounds like there are several different styles of what needs to be milled.

I would say given your experience we should do whatever you think is best at the time.

[Berncly]

This could be handy too: https://www.thingiverse.com/thing:3351478

I like that.
Would be very useful if going without the jig.

[WoollyPullover]

I want in.

[streaker69]

I like that.
Would be very useful if going without the jig.

There's another one that I found that I think would work better with a jig.

[alpacaheat]

As for timing, if we can push it out until March at least, that should give me some time to be getting around after my knee surgery which is next week. Won't be freezing then hopefully either.

But don't schedule around me.

[Berncly]

There's another one that I found that I think would work better with a jig.

T1066 works metal for a living.
It's very possible he may show us a cleaner method without the jig.
If so, a stabilizer would be really useful.

[Walleye Hunter]

First we're going to give it a go before we gather a big crowd and see how it goes. Then we'll have a good idea of what we're up against. It would bite if we all got together and for some reason it didn't pan out.