i can’t even load TPU - it actually damaged my extruder because loading it first try it wouldn’t even load, i removed the ptfe tube and put it in directly… it started pulling it immediately like it was fine, but it never came out the other end… it twisted around the pullies inside the extruder head. taking it apart because of the pressure, the spring flew off that used to hold the filament in place. Ive got the extruder fixed after trying who knows how many springs. It is brand new filament. I didnt dry it because it was new… but i tried again after drying it over night and it still wound up instide the extruder. (I was careful this time not to let the spring fly out) Anyone else have that issue?
WOW!! THAT IS A SHAME, WHAT TPU DID YOU USED? (HARDNESS)
I don’t print TPU, but I had a similar problem When changing filament types.. Could the hot enbd be clogged? If it is blocked, the TPU would backup in the system like that. I often find that using the same hot end when moving from a harder, higher temperature, material to a softer lower temperature material often clogs the hot end. I’ve gotten to the point of just automatically switching hot ends when I change filament types.
it was 95a, i can use that in the ender 3, but not the creality hi with direct feed. (I know it wont work in the feeder)
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it doesnt even make it7 to the hot end.. the creality hi has a very long hotend as well, but this is winding up in the extruder gear before it gets to the hotend.
Woah! That’s Brittle. I’m not familiar with the Hi printer, so take this with a grain of salt… on the K2 I have to release tension on the extruder spring for TPU. Is that adjustment available for the Hi?
yes im aware of that. I have had a few 3d printers, this pushed down to a point when i did.. but the minute i tried to extrude… it twisted up inside the extruder… pulled it back up some and wrapped it even though the hotend was heated, there was enough old filament that it just pulled it upward instead. The only possiblility is that if I want to use TPU, i will probably have to put in a new completely clear nozzle. Ive never had to do that before with TPU, but i might have to do that
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