For my printer's hot end I chose a Mini J-head Mk II, custom-made by hotends.com. The standard J-head is designed for 3mm filament. I liked the simplicity and light weight of the J-head, but my printer is intended to use 1.75mm filament, so I custom-ordered a mini J-head instead. I had been considering an Arcol.hu hot end at first - liked the idea of an all-steel extruder - or possibly a Budaschnozzle, but the Rostock design really calls for a head that's as lightweigt as practical to m...
