Bowden Tube Lock (revised) by vivamus3d

Last crawled date: 3 years ago

This is a slight remix of my own PC4-M10 Bowden tube lock. I realised that with better accuracy of the printer (have a new CR-10V2 now) I had to reduce the tollerance/gap between inner and outher thread so that the tube will still be locked well when the cap is fully screwed on. The old version was simply to loose now.
I have these connector locks in use now for several months and I'm very happy with them.The PTFE tube does not move anymore and the connetor doesn't loosen over time, even with heavy retracts during print (which used to loosen the connector ring after a while).
I use the long version for the extruder end to maximize the grip on the tube. I also extended the base half a milimeter so that the base really touches the extruder and can not be "pulled" during retracts.(Distance between bottom and connector ring is now 10mm, if you have shorter connectors, lower the print in Cura to cut of a millimeter or so from the bottom of the base)
On the print head end of the tube the short version is more than enough, because the tube is anyway "stuck" in the heat sink. (at least on Creality and other MK8 hot ends) and there is not much force at the "far end" of the tube.
Therefore I still provided three variants
long version (preferred at extruder)
short version (preferred at print head)
short base with some extra space on one side for the print head mouting screw
Sorry for the relatively large STL files (don't know why especially the cap files are huge), I exported them from OnShape in fine resolution for perfect and detailed prints.