My first pass at making printable globe cuffs. The cuffs work by entrapping a pair of wrists crossed in an X shape, and a luggage sized padlock through the top hasp holds them securely closed.

Sizing: the default size of the stls is VERY SMALL. The set in the photos is printed at 120% size, which fits my wife well and myself just barely. If you're printing these exclusively for a guy you'll want 130% I think, maybe more.

You must print 2x of each arm, 1x base, and 4x pin. The pins hold the arms to the base. Same type arm go opposite each other, then they all close together, with the lock arms inserting into the hole of the under arm.

I printed with supports for the arm, and none for the base or pins. Rafts help if your pins are not staying stuck during printing.