9mm R.K. dummy blank round

thingiverse

This is a training round designed specifically for training purposes. It can be used safely in blank firing revolvers for defensive training without risking damage to the gun. It should be printed with thicker walls and more infill, just like the default settings. I made mine with 40% infill and 1.2mm walls. I also included a second variant with an opening at the bottom where the primer would sit. This will reduce stress on the firing pin even further. Print Settings Printer Brand: Ultimaker Printer: Ultimaker 2 Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: 0.40 Infill: 40% How I Designed This Two cylinders and a sphere - a simple design that couldn't possibly go wrong!