It’s been a long time since we’ve done any kind of 3d Printed Guns update, and things are still proceeding at a staggering rate, with lots of interesting gun designs and also a real explosion of accessories.
However, here’s something everyone seems to have been anticipating: a working 3DP M1911. Except… it’s only working in .22, so far, it’s not working 100%, and as we’ll see it took several iterations to get there. The developer goes by the name MBA Firearms. This is the current iteration:
In an Imgur album, the poster says this:
Here it is, the FIRST EVER 3D-printed 22lr semiautomatic pistol. These 1911 models were printed, assembled and test-fired by MBA. There are many firsts with this gun. This design is still in development but improvements are being made.
It’s not a very high round-count gun yet.
Changing to 910 reduced warping of the rails. The warping was partly due to the weight of the mainspring. Tests with 15# spring worked well but was obviously to light leading to light primer strikes. More testing will be done with 16# and 17# spring later which are ready to go.
The reference to 910 is to Taulman 910 nylon filament (the spool is visible). It’s strong stuff, but needs to be kept dry aggressively as possible, and may need higher temps that some printers prefer.
This image above shows the characteristic layering of 3D printing on consumer printers. The next picture shows four of the test frames. The one that’s built up into the gun is made of Taulman 910. The white one is made of ABS. The ones that have “attached” grips actually had the grips molded in as part of the pistol.
Here’s the initial design and test-firing video.
And here’s a follow-up with more test firing. Better, but still not reliable.