Bosch Rotak 32R Lawnmower Pulley/Fan - Version 2.3

My Bosch lawnmower stalled and melted its drive pulley - I designed and printed a replacement

**Update 21June 2016**
It finally died - the mower ate a chunk of wood which jammed it and caused grievous harm to the pulley and tension bearing assembly. These parts have kept the old mower running for a couple of years but I now have a new one, so don't expect further updates to happen automatically. If you have specific things that you'd like to see changed I might still be able to help, plea