The Hamburgler
Spotter Loader
You could weld two triceps bars together lol
Rotating sleeves AND shaft
Rotating sleeves AND shaft
I could knock one of them up easy enough with my welder and bender. Wouldn't be knurled but that doesn't really matter. Might be a project for next weekend.
I'm not a huge wrap for the handle set up either
Go parallel or 45 not a combination
fixed sleeves
I think you'll find a LOT of specialty bars are made without rotating sleeves.
Main reason would be that it dramatically reduces the cost to make it.
Maybe grab one of those pull up bars from racks and weld post on the end for weights. Pretty ghetto though and you'll have to trust your welds.