pelletizer

thingiverse

I wanted a pelletizer that was clean, made as much on the printer as possible, durable, and easy to locate parts to make. Every body has those kinds of things in their junk boxes. I tried to find bearings for this but none that would work, so I had to make it as durable as I could using plastic. The grub screws seem pretty large for this, but they're necessary when you put it together and cut it. That puts a lot of pressure on the drill bit, causing a real big kick back, so it's imperative to have those grub screws. They do two things: keep the drill from crushing the sleeve and wobbling, and secondly, they keep the ware on the largest part of the sleeve. I put this between my legs while sitting, so there's no need for a clamp down. I've considered making a clamp down as well as hand-held filament feed or drive directly from the drill, but the way it is now is pretty fast and with the inner PTFE tube, it holds the filament while feeding, so you can feed a whole roll really fast. Print all parts using PLA not ABS. PLA is much harder than ABS; ABS wears too fast. The theory of this is that two services - the hardest material will wear the softest material, so all ware services are the same material for no wear. If you've ever tried to file down PLA, you know how hard this stuff is. Print everything at 60% infill; 100% would be better. Everything is threaded for M6 threads, but the sleeve for some reason will not print the threads properly for a tight fit. If you print this part at the lowest height of .1, I think that the threads might be tight enough. Parts needed: 1 - 7/16" drill bit 4 - M6x6 grub screws (or coarse for a tighter fit) 4 - 1/4-20 x 1/4" 1 - M6x30 3D printer tube and nut (there is 20mm threaded part, so anything larger than 20mm won't work) 4 - plastic screws or screws of your choice for the hold-down ring 1 - wide-mouth mason jar and ring