Can holder for mounting on a crutch

While in Norway in the winter, the roads tend to be extremely slippery and people may end up with a broken leg, hopping along on crutches for a while. During this time, it's not joyful to go to the kitchen to grab a can of soda (or something). A friend of mine broke his leg and asked if I could make one, so I just hacked together this one in OpenSCAD to be mounted on a crutch using cable ties. 

Apparently, this model is made for German cutches, 20mm thick and Norwegian ones are thicker, 21mm or so. I have uploaded the OpenSCAD model now so that it can be changed as suited. Keep in mind that this is work in progress and there's a lot of junk code there that doesn't want to be seen - it'll be fixed - one day - but it works. To edit the diameter of the crutch, see crutch_d, to make a very small version of the can holder (only), see full_test. I will upload more models later, but not tonight…

Please see https://github.com/rkarlsba/openscad/blob/master/begerholder/boksholder-krykke1.scad for the code - keep in mind that this is work in progress, so there will be bugs. I'll upload a “stable” one once it's ready ;)

Any sane print settings should work. No support needed.