#4,800 in Industrial & Scientific
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Reddit mentions of YOTINO PC4-M6 Pneumatic Fitting Push to Connect + PC4-M10 Straight Quick in Fitting for 3D Printer Bowden Extruder (Pack of 20pcs)
Sentiment score: 1
Reddit mentions: 1
We found 1 Reddit mentions of YOTINO PC4-M6 Pneumatic Fitting Push to Connect + PC4-M10 Straight Quick in Fitting for 3D Printer Bowden Extruder (Pack of 20pcs). Here are the top ones.
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PC4-M6 Fittings: thread M6, inner diameter(blue end) 4mm, suitable for the tube whose outer diameter is 4mm. PC4-M6 fittings are made of copper and plastic. Seal ring for Extruder help to prevent leakage. Heavy duty and durable.PC4-M10 Fittings: thread M10, inner diameter(black end) 4mm, suitable for the tube whose outer diameter is 4mm. PC4-M10 fittings are made of stainless steel and plastic. High hardness and Anti-corrosion.Easy to install and Quick to fix: Press and hold the blue or black part of the quick fitting and pull out the tube. Connecting by the outer thread of the quick fitting and convenient to disassemble.Applicability and Compatibility: Widely used for connecting Bowden Extruder, PTFE fittings.Note: All these Fittings for 3D Printer Extruder, please keep away from children.
Specs:
You're right. The tube should not be moving every time filament is retracted. It should never move, period.
I suspect that you have a recently deceased coupling or that, somehow, you haven't inserted the tube correctly, or... You haven't cut the well-worn tube in order to expose a fresh section of the tube for the coupling to grab onto. You only need to cut off off a wee bit to make that happen.
In any case, I think you should buy a boatload of new couplings. I'm happy with these; inexpensive and enough of them to keep your printer busy for a while.
https://www.amazon.com/dp/B07PSDJHRY
Good luck and happy printing!