The file '37mm Powder Bushing / Cup 40 Grain Capacity For Reloadable Shells For Flare Launcher Use 3D Printer Model' is (stl) file type, size is 38.7KB.
WARNING! These models are not suitable for real world use out of the box as a 3D printed item. A better though untested option would be using these printed models to make a mold and then casting the models using a more suitable material and even so it is not recommended.
This was designed around one of the yellow plastic shells. Tapered style powder pocket holds 40 grains of black powder although you should independently verify this. The bushing must be epoxied or somehow semi-permanently affixed to the shell casing. These are currently UNTESTED. I take no responsibility for the use or misuse of this file. 3D printed materials tend to be weak and it may be dangerous to actually use 3D printed parts in this manner, making molds and castings or even machining metal based off these prints may be a better option. Use at your own discretion. Be safe with your reloading.
40_grain_tapered_powder_bushing.stl | 319.6KB |