Bowden tube  

RE: Bowden tube

You can replace it; it will then be blue.😉 What other benefits would you expect?

Personally I have not found any deficiencies with the stock tube so far. For some filament types, people report that pushing them through the final sharp bend of the tube is problematic, but I think that it more a function of the small bend radius than of the tube material. Actually, if the blue tube is stiffer than the stock material, it might be difficult to install there.  

RE: Bowden tube

All the blue tubes I have are significantly stiffer than the white ones. Given the amount of movement of the tube I'd be inclined to stick with the flexibility of the white tubes. 

RE: Bowden tube

I installed a grey tube in mine: PTFE Tube Kit, 2.5mm ID×4mm OD after the white one was showing some wear. It's as flexible (actually I think slightly more flexible) than the stock white. 

RE: Bowden tube

I thought there were advantages to having a "precise" tube. Especially in retraction. I'm most likely wrong, and it's actually better to have a flexible tube that's wider than the wire.

Thank you! 

RE: Bowden tube

Posted by: @andytpks

I thought there were advantages to having a "precise" tube. Especially in retraction. I'm most likely wrong, and it's actually better to have a flexible tube that's wider than the wire.

Those advantages are there for bowden setups when the extrusion drive is not on the print-head. But the bowden in the CORE One is better called "reverse bowden" because it's only used to route the filament to the print-head. On a bowden setup you want to make sure that the distance between the extruder and the melt zone isn't different between extruding and retraction. On a direct drive (like the nextruder) that distance doesn't change.

For reverse bowden a little extra slop is beneficial to help reduce friction leading to the extrusion drive.