Bionic Buster

This is an STL of a huge bionicle-compatible weapon, based on the idea of the Buster Sword from FF7, but made in the Bionicle style.
There is also a bonus file for an even bigger version, for those of you who want something a little crazier. The pin holes on the XXL version are going to be too big for a technic pin, but the axle at the bottom is sized properly.

Note: The axle and Pin holes may vary in size according to print material, print orientation, supports and in the case of resin printers: Exposure times.
So I cannot guarantee with certainty that the axle hole at the bottom will some out right on your 3d printer. You may need to scale the model a bit in order to optimize the axle hole. With that said, there is no reason you couldn't glue in a plastic axle if you like.
The axle hole is 1.5 length, instead of 1. I figured that would be a good idea, since it's such a large weapon.