3030 T Slot Corner Bracket

thingiverse

This is a 30x30 corner bracket for the hypercube evolution. Instead of buying the recommended ones from Aliexpress, I decided to make this part instead. When tightening down, one of my M5 socket head screws did work its way through the slot, I didn't feel like reprinting as it still held firm, but you could make that slot a little smaller, or alternatively just throw a washer there and you're set. Hypercube Evo for reference: https://www.thingiverse.com/thing:2254103