CNC Milling an AR-15 Receiver From Scratch Chapter 3: 3D work.

[ChimeraPrecision]

ahh I see, I thought it was intended as SBR. My bad. What caliber can is your stamp for?

[kingjamez80]

@ChimeraPrecision The can is approved for .223, however that is a maximum rating. I'm designing it to work with .223 pressures while I plan to use it mostly for .22lr, just for price reasons.

[ChimeraPrecision]

great videos man, how does this not classify as a form 1....lowers are the serialed assembly in ar's right?

[kingjamez80]

@ChimeraPrecision A Form 1 is a $200.00 permission slip to create an NFA item (machine gun, silencer, short barreled rifle (or shotgun), AOW, DD). A Form 1 is not required for any firearm not covered by the NFA. If I chose to turn this lower into a SBR, then I would need a Form 1. I have an approved and stamped Form 1, but it's for a silencer, and may be the subject of my next set of videos.

[kingjamez80]

@krisboro Yea, autocorrect killed me in that last post. That should say "not", "3d", and "stepover".

[kingjamez80]

@krisboro

You are right. I can't afford expensive CAM software. I used a 2d cam first for hogging most of the material away, I then used a 3d cam to do the contours. Because of this, the 3d cam didn't know what had and had nit already been machined away, thus the air cuts. I could have done it all in 3G, but the stopover required to get nice flat surfaces would have taken forever to cut.

[krisboro]

This video series is great. Not sure about the software you are using though. It seems incredibly inefficient with all the rapid movements and back and forth ghost cuts over nothing. I presume you used 3D models for the CAM?

[kingjamez80]

@rodjava Thanks! I probably could, but I can't afford Aspire. At the time I purchased Cut3D was the same price as Deskproto and DP had far more features, so that's the way I went. I love Vectric but just couldn't use them for the 3D work.

[rodjava]

Hi,

I was just wondering if you could have used Aspire for all your Cam work?

Great videos!

Rod

[kingjamez80]

Thanks! I'm getting very close!

[YoungJim409]

This project looks great, I look forward to seeing the end result.