Hmm, ok I think I will do that.
I also checked it with the shank of a 3mm drill bit (can reasonably reliably measure this to be 3.01mm as it's solid) and it's definitely an interference fit that is going on here.
Hmm, ok I think I will do that.
I also checked it with the shank of a 3mm drill bit (can reasonably reliably measure this to be 3.01mm as it's solid) and it's definitely an interference fit that is going on here.
I ad exactly the same problem, with just the very end of the tube suddenly being only 3mm ID. Never solved it, maybe too much heat? Was supposed to only be 210 though. Stupidly cut off too much of the tube and ended up sourcing a replacement in Australia.
Yes, I have tested it more with a filament that had a slightly larger head and I detected that it was more like 5mm where there's a contraction near the hot end.
I forcibly made the contracted end larger at the tip, seems that the tube was probably not supplied faulty and it might be something to do with heat softening the tube and pressure crushing it.
correct.
i got a new one from UM. it measured 3.2mm ID.
I put it in the PEEK, printed for a couple of hours, then dismantled to inspect it.
the ID was now 3.1mm.
it shrinks, probably due to the OD being slightly larger than the ID of the PEEK so the material has to go somewhere and heat softens and reforms it to the new size? dunno, but it happens.
whatever you do, don't try to enlarge it. you'll create plugs. i already tried that.. :(
Too late!
I didn't remove any material to enlarge it though, just used the shank of a much smaller screwdriver and did some rudimentary burnishing to enlarge it to roughly 3.1mm
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futurejames 0
This isn't normal. I would get in touch with Ultimaker support.
I had the same issue as you. They mailed me a new bowden tube.
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