Mountain Bike Stuff

Things fer yer bike.
Fed up of mud still getting you, extend your fender. A lot of mudguards are not long enough, here's a solution to extend for those "dry" winter rides.
Want to lock your shimano derailieur down to get you wheel out, theres' a tool for that.
Want to attach one of those cheap rear lights with a square clip, there a thing for that too.

The fender extension prints flat but I used the pan of hot water method to mould the edges round, the ridge up the middle stops it flapping back down.
The clips work remarkably well, I was thinking I might have to drill holes and use zip ties but not yet necessary.
Your mudguard will probably not be the right shape, took me 5 tries before getting something that works for the muckynutz.

Technical stuff:
The models are optimised for a 0.4mm nozzle and 0.2mm layer height. They will slice to have exactly 2 threads in the walls of the fender clips so print smooth.
There is some code that makes this happen at the start of the .scad file mode