I stole this image from kris:
If you enlarge the inner diameter of the PTFE, the filament will expand into that new diameter (it can get quite soft higher up in the system) and cause issues. One thing I didn't consider is that it will likely get caught at the bowden entrance as well.
I meant that a lot of stuff gets produced there in general, not specifically filament. I'm sorry, but I don't know of a source for filament in China. The filament I use mainly is produced here in Europe.
I only plan to enlarge the internal diameter, keep the external diameter unchanged, which will make the plastic thinner, so won't jam?
In fact, I get a spool of 2.85mm filament yesterday from the sole seller (who sells 2.85mm filament ), but the quality seems not good enough, because I get jam in the PTEE isolater coupler 4 times. Each time I have to move the coupler out and clean it.
I'm sad to say this but it's truth that many things are made in China, but not sold in China, we have to buy from foreign countries.
You said that so much stuff is produced here, could you give some examples? So may be helpful for me to get 2.85mm filament.
Thank you for your help, as always.
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