foehnsturm 970
Hi Sander,
Thank you for your instant reply.
As I never managed to find a source for imperial sized PFA tubes here in Europe I'm quite sure it's the one supplied by Ultimaker. Don't get me wrong, I've been very happy with overall print quality. But never got rid of considerable stringing with PLA/PHA so started to investigate.
My understanding is that 4.0 ID mm gives about 1.8 mm bowden lag ((4-2.85) * Pi /2 ) vs 1/8" gives about 0.5 mm. This defines the timespan until the filament actually starts to retract at the print head and the nozzle happily oozes.
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SandervG 1,522
If I am not mistaken the ID of the bowden tube should be 3.16mm
We have had some experiments with larger ID but we found the 'normal' works better.
I do not think they were ever sold with larger ID.
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