This is an addon to slamzee's Stormtrooper helmet to easily add it to a keyring.

I printed mine with a raft and linear supports which came off really easily, but I assume that when printing at this size or smaller it should be doable without supports.

I've printed several of these and even with a raft and supports the post-printing work has been minimal, done in a couple of minutes. I've preferred that to risking sloppy overhangs and threading.