SoliForum - 3D Printing Community — 3D printed 9mm semi-auto

Re: 3D printed 9mm semi-auto

2016-02-28T14:37:16Z

try Taulman

Re: 3D printed 9mm semi-auto

2016-02-28T11:36:10Z

commercial polymer AR15 receivers are made of glass reinforced nylon.

Re: 3D printed 9mm semi-auto

2016-02-05T14:58:39Z

Well, in my experience printing extruder mounts in both PETG and ABS, I found that PETG fatigues and slowly bends to whatever stress there is (like the tension arm pulling on it). ABS holds its shape. I don't know what AR-15s are made of but I'd guess either nylon or ABS.

PLA softens at 50C and ABS softens t 90C (194F). Putting a hundred rounds down the tube could easily bring the barrel beyond the melting point of any plastic, so the designer has to allow for thermal breaks, insulation or whatever OR limit the rate of fire so it does't overheat. Part of gun discipline is knowing not to overstress your weapon.

Re: 3D printed 9mm semi-auto

2016-02-04T22:03:29Z

Good point, PETG would probably be a good material.

Re: 3D printed 9mm semi-auto

2016-02-04T20:06:36Z

jagowilson wrote:

I wonder if he could get more than 16 shots without cooling using something like Nylon instead of PLA. ABS might even be more resistant to melting than PLA. PLA is an interesting choice for this application, to be sure.

I would actually print it myself using PETG. It has similar properties to Poly-carbonate.

Re: 3D printed 9mm semi-auto

2016-02-04T19:22:20Z

I wonder if he could get more than 16 shots without cooling using something like Nylon instead of PLA. ABS might even be more resistant to melting than PLA. PLA is an interesting choice for this application, to be sure.

3D printed 9mm semi-auto

2016-02-04T14:47:28Z

Check this out.

http://arstechnica.com/tech-policy/2016 … ol-debuts/