M84 Training Grenade (Impact Resistant)

thingiverse

M67 Fragmentation Grenade Trainer: https://www.thingiverse.com/thing:5665277 This is a M84 stun grenade made for my ROTC unit for tactical training. It's designed to accept a 4.25" section of 5/8" threaded rod through the center of it to keep it rigid and add a convincing amount of weight to it for throwing. Use it for your own tactical training, airsofting, and more! Some assembly tips found via trial and error: - Print the body of the grenade vertically - Print the fuse of the grenade vertically but inverted (top flat face on print bed) - Print both separately, TPU strings readily - Cutting the threaded rod will result in burrs that complicate inserting it, bevel the edges for easier insertion - Heating the rods in the oven to about 300F lets you temperature fit the rods for easier fitment and stronger adhesion - Inserting the rod into the grenade body first lets you screw on the fuse very easily