PC4 M10 Bowden Brake - To Permanently STOP extruder tube movement.
Description
Searched here and around the web and found nothing I cared for so I made my own vision of a "Bowden Clamp" and called it the "Bowden Brake". This is a two piece construction containing a top and bottom that forms a cube surrounding the PC4 M10 connector. There is a collar on the extruder drive side of the cube that surrounds the back side of the PC4 M10 connector. The collar keeps the Bowden Brake static and removes any inline movement. The "Bowden Brake" cannot move since it is now a part of the PC4 M10 connector and will be secured with the tightening of the Bowden Brake/PC4 M10 assembly. On the output side, or rather the side where the Bowden tube will be inserted, mid way there is a slight extrusion or nipple on top and bottom. When the "Bowden Brake" is tightened, it will keep the PC4 M10's release button from moving in either direction as well as securing itself to the PC4 M10. This will stop any movement of the tube. Other designs are loose fitting to the PC4 M10 connector. This can still allow movement. I also found most design to be cumbersome or used wire ties. The nipples slightly pinch the Bowden tube creating a second layer of security to completely stop all moment on the Bowden tube. I cannot get the tube to move even pulling on it with players. I used 3mm hardware. Top and bottom have cutouts for the nuts and an indentation for the screw heads. either assemble and install or slightly loosen the PC4 M10, assemble the "Bowden Brake" around the fitting while in place and the printer. Turn until slight resistance and then just slightly seat. No need to over tighten the Extruder drive end of the cube. Same with tube end. Tighten until slight resistance and then an 1/8 turn will seat the screw. It takes quite a bit of pressure to actually pinch the tube enough to stop the filament from moving within the tube. I suggest you install the Brake and free hand a piece of filament trough the tube to get a since of the pressure. Like all things you will have to tweak to your specific needs. I would rather this Mix did not get a remix. I want to keep this one close it's kind of special. Thanks James B
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