dji Firewheel quadcopter arm

A replacement arm for the dji Firewheel quadcopter.

The photo shows the version before the published one that doesn't have a hole for the motor wires.

I struggled to get the screw holes in exactly the right place, but I think they are ok now. If not, let me know. It's about a four and a half hour print on my Replicator so I haven't bothered to re-check, but I'm sure I'll be printing another soon, given my piloting skills!