Death Watch Mandalorian Gauntlets MKII (Man) with Incorporated Hinge.
They're a mirror image of the Bo Katan as well as a close match to the gauntlets used by most male deathwatch in Star Wars the clone wars season 5
The hinge was made to make use of a standard cycle spoke as the hinge pivot. You cut to size and can purchase these from bike shops for $2.
The version was changed with supports to minimize curling on the bottom. these can have to be eliminated after printing.
I suggest using supports to print the hinge segment no more than 5% overhang ought to be sufficient. They are going to print without supports but will be a little messing around the hinges.
Both sides should be pasted together. I find the easiest way to get this done is to sand the surface and ensure both sides are level. Subsequently in a shallow dish use acetone fuse each side and to melt the ends. to not leave the abs in the acetone for any more than THREE seconds.