Lift-Off Flag Hinges

I bought some crappy little metal flag hinges from Amazon for mounting my enclosure doors and they all came out right-handed. I mean seriously?

There were other issues with them as well (like they were so thin you couldn't countersink the backside to reverse them) so I decided to hell with it, I'll print my own.

I set these up for a #6 mounting screw and the pins are some 2mm bar stock I had laying around cut into 80mm lengths. I decided to go with a metal pin for durability and smooth operation, and the small pin also allowed me to keep the body of the hinge nice and small.

The only real post processing is to hawg out the holes a little bit for the pin. I kept the holes small-ish so I could keep the slop out by drilling precise holes. I drilled the lower leaf so the pin is interference fit tight, and drilled the top leaf just a tick larger so it slides right off the pin when you want to lift off the doors. I added a 3mm washer in between the halves.

They are seriously smooth operating and plenty tough at 2.5mm thick.

I printed them standing up (hinge hole facing upwards) in PLA, with a brim, 0.40 nozzle and 0.15 resolution.

You'll see in the stl's that the leaf with the smaller pin hole is marked with a little divot on top, but it doesn't really show up in the print, so just keep track of which is which so when you drill you're drilling on the proper half for what you're doing (tight or loose). Not a big deal really, either piece will work for up or down, I'm just anal.