The big white thing covering the needle in the picture, has a 5/16 bolt hole. Might need a little bit of rasping/sanding to fit, but if you have a CNC machine you probably already know how to do that. :D

This is a basic needle guard for MoeBeast's Foam Ripper:
https://www.thingiverse.com/thing:2520214

My parents really wanted me to make this in order to be safer while using my needle cutter, so I designed and revised it (This one is V1.1). It "should" protect from a broken/launched needle, but I DID NOT TEST THIS. Use it at your own risk.

Just print it out with the extended semi circle guard thing facing up, with supports.

Stay safe and have fun!

Monoprice

Maker Select

Doesn't Matter

Yes

0.2

Doesn't really matter, but I did 30%

Any material does the trick.