Valken/Hakkotsu Thunder B Compatible Shell
Description
Valken/Hakkotsu Thunder B Compatible Grenade Shell. As with anything dangerous, mess with this at your own risk. Print "Shell Neck Test" to make sure your printer is up to the task. It should be a solid thread fit and just fit past the center metal core. Adjust sizing on the test part if it doesn't fit, then use that multiplier on the real deal. Real Thunder B threads are 13tpi, 28.6mm nominal diameter. The printed object in CAD is ~29.03mm nominal, printing at 28.89mm, or thereabouts. The cut threads in the grenade head are pretty deep, so there's a fair bit of wiggle room. Printing should be done at 4 perimeters, 4 top layers, 4 bottom layers. This should make the walls solid, as well as the critical parts of the neck and shoulder area at the top of the shell. No supports are needed, as all overhangs are 55 degrees. I've included a 2mm wall thickness and 2.4mm wall thickness model. Either might work for you. Do not use hard filaments like PLA or PETG. These will fragment. Don't use TPU either, as it just makes a bottle rocket and blows the shell off. Ideally you'd use something like Polypropylene filament, which should stretch and tear like the real shells without fragmenting. Filaments that don't have amazing layer bonding like Polypropylene might need to be printed at 0.1mm layer height to achieve gas tightness. I am still waiting on my polypropylene filament to come in so I can test this. This Thing will get updated once I've tested PP filament. It is critical that any way you print these shells, you do so in such a way that they are not allowed to fragment - this is an unacceptable hazard to your fellow airsoft players.
Statistics
Likes
0
Downloads
0