Steel battery boxes

building a set of steel battery boxes is not that easy as it looks; due to the thickness of the steel sheets, the bending of the right diameter by hand is pretty hard!

Theses are the lasercut sheets:

the front sheets bended:

the hardest part; rounding the outer sheet:

and here after welding and grinding the first box.

now some mediablasting and primering and they are ready!

in the end they are rocksolid!