Needed a Toggle Lock for a Thein Baffle Vacuum monstrosity but did not see anything that fit so took inspiration from Syzguru's STLs and mocked something up quickly in FreeCAD.

FreeCAD file included so you don't have to start too far in the weeds. I as always am pretty lazy on my own stuff so lots of primitives before chamfers. So just moving those primatives around will break the chamfer so might be best to delete the chamfers modify and then add back what sleek chamfers you want.