The Concannon is a cannon that I printed to use with the smallest firecrackers only.

It is coated with multiple coats of truck bedliner spray for aesthetics and to increase structural integrity.

This is a simple two- part print, with no support.

The inside of the barrel is mostly open to rapidly dissipate the pressure of the firecracker going off. There is a shelf to hold the firecracker. Towards the back is a funnel to help with finding where to pass the firecracker's fuse through the touch hole.

I am not responsible for what you do with this design.

If you teach yourself how to use different infill settings for different parts of the print, you could make the areas near the cracker high infill, and the rest lower so as to save filament. Cura can do this relatively easily.

Print the barrel facing down, and the carriage with the two arms facing up.