@Anticom as long as you are doing it in plastic or aluminum the cheep 4 flute end mills you can get on amazon or in a hardware store should be fine, with steel or anything else you wanna go with a professional machine tool supplier

Don't buy a shitty 4 flute. Buy a mid tier so you have to do less cleanup

I'd say buy one at 1/4th and a few smaller ones

Well I was thinking more about being able to cut the material and not blow apart on ya but yeah, better tooling. Will always give better results

And yeah, a 1/4, 1/8, and probably whatever specific pin hole sizes you need

Dont use an endmill for pin holes

Use a proper drill bit

Endmills don't like doing the work of a drill

I don't see an issue with plunging it

Center punch the hole for the drill bit and rock and roll

Especially after you already cut out all the stuff in the middle you have to

I mean yeah, centerdrilling and drilling it out would probably give you a much better result

Not even a center drill. Just punch mark it

I know with the Polymer 80s, they come with all the bits you need don't they?

Yeah but he is probably doing an ar15

Poly 80s you can do with a drill

Poly 80s you can do with a dremel in a pinch

You can for sure use dremels

The holes will be shit more than likely if you try that tho

Nope

Lock it in a vice and don't plunge it and you'll be ok

Well with the P80 yeah cause it has the holding piece with the drill guides

But anything else is a crapshoot

Probably all the handguns but 1911 molds would be fine

Don't try on a rifle

Exactly

Ty for advice

I'm not doing an 80%. I'm trying to machine ak trunnions

Oh.

Well, more specifically I'm trying to machine the 4.5 mm sidefolders

because I'm not payinng $200 for one of those

https://www.youtube.com/watch?v=KPO9e4edDzE

The ultimate weapon

🥜 💦

👉 👌

Comitt weld

IT IS

Needs rivits

And basically just assembly