This is a Micro Fusion Cell from the game series Fallout.
This was designed in fusion360.
If you would like one fully finished by me you can go check out my shop.
https://www.etsy.com/shop/MEMprops
Printer:
Davinci pro
Rafts:
Doesn't Matter
Supports:
No
Sand and smooth, paint, assemble, and then weather if you're into that sort of thing.