RepRap Discount's BullDog XL extruder for 1.75 and 3mm filament. 3D model file includes dimensions necessary to check fit or design an extruder carriage for your printer.
Former electrical engineer, I became a dentist in 2011. I designed and built my printer, Son of MegaMax, using surplus machine parts at the Milwaukee Makerspace.
My newest printer design, Ultra MegaMax Dominator, is a coreXY machine with a 300...