Replacement for carriage lock handles on the X2 and clone mini-mills. The cheap Chinese metal breaks with regular use. I printed at the 0.35 fast profile in natural PLA with 5 perimeter walls and 25% infill to test, and it was sufficiently strong. I used an M6 bolt, some washers, and a spring I had sitting around to get it to slide out and function as originally intended.
The author marked this model as their own original creation.