Geared Bowden Extruder V2 for flexible

thingiverse

Things that are needed for assembly include a 5mm axle approximately 50mm long, an MK8 drivegear, three ballbearings with a diameter of 625ZZ, three M4 screws with lengths of 30mm and hexbolts. Four M3 screws with lengths of 10mm are also required for the motor mount, along with one 16T GT2 pulley, one 60T GT2 pulley, one hard spring taken from a Velleman Vertex K8400 extruder, one 79T belt, and a 50mm teflon tube inside it to guide the filament. Additionally, one or two teflon fittings are needed, as well as a Nema 17 motor. The e-steps with 16T and 60T pulley come in at 548.27. This is the second version of the assembly but first to be tested and still has things that need improvement on, but it worked better than could have been imagined. Testing was done using a TPE Torwell Flexible print job with retracts, which worked really well. However, there were some issues with extruding plastic at 60mm/s, but speeds of 40-50 worked much better and require more testing. The assembly process involved drilling holes in the top and bottom frame pieces for screws and an axle with diameters of 4 and 5.5mm. Small teflon tubing was inserted from both directions where the filament is supposed to go, then cut after the frame against the MK8 drivegear, followed by insertion of PTFE fittings from both ways. Printing succeeded at a speed of 50mm/s with a PTE flexible job.