I am struggling to get the extruder to feed tpu filament without jamming in my new e3+ v3. It kinks and stops extruding. I have stopped using the pfte tube, moved the feed to top loading with zero friction , reduced retraction and speed but still the extruder jams after multiple attempts. Other filaments print absolutely perfect and fast. Any tips as I don’t think others have this issue with the new V3 or the K1 series extruders. I actually was more successful printing with much tweaking with my OG E3 from years ago. Is there a way to reduce the tension on the new sprite extruder?
I’m having the exact same issue. I printed a temp tower with tpu and it failed on the last temp, which is fair given it was probably too low. But it now refuses to print tpu even though everything else prints fine. It doesn’t get clogged or stuck… it wont go through and just clicks. I’m thinking maybe the gears are too tight for it? idk
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Printing TPU on all of my printers I keep the retraction distance down to 0.8-1.0mm. Temperature tower is critical if you want to avoid stringing. For me 230°C is correct, 5°C above or below and it will string. It is more tricky than PETG but not super difficult. Currently running TPU through a 0.2mm nozzle with no clogs, bit more stringing than 0.4mm but its not bad.
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A bit late to the party, but I have 2, Ender 3 V3 Plus printers.
I’ve only printed TPU on one and on that one, I mount the spool on the top rail and I moved the runout sensor to just under it.
I don’t use the long PTFE tube. Rather, I cut a 4" (ish) piece that goes into the top of the extruder.
With this setup, it reduces most of the drag that having the spool on the side and going through the longer tube causes.
So far, TPU has printed just fine.
I also use about 230C, SLOW, but I didn’t yet play with retraction.
I’ll do that the next time I print TPU.
I have a 12" loop of capricorn tubing on top of my printer, doesn’t seem to be significant drag one like this
I am still struggling, retraction down to 0.3, slowed speed and temp tower done but my 3 plus v3 gets stalled as the filament feed still stops due to feed failure. Spool is mounted above with no pfte tube at all, direct into the extrudeerMy upgraded OG ender 3 works better than my new upgrade. Frustrating and have even reduced tension to avoid stretching/thinning the filament. Any tips or ideas as to how to get this to print tpu would be really appreciated.
Same. I actually bought a second one. Luckily this one doesn’t have that awful noise the first one does. I’ll probably exchange that one. But the same issue occurs with the new one, the extruder gets stuck and won’t print tpu and it just clogs up everything. Here’s the new printer and when it got clogged. First one is just showing how I have it set up.
I’ve gone one step further, eliminated the pfte tube and direct feed from the top to try to resolve the TPU issues (possible stretching leading to extruder fail) but still can’t get the print to keep feeding for a print. THis printer was a major upgrade in every way from the OG E-3 but this is the only struggle I am having. Not sure how I can adjust the extruder tension in my research anywhere.