mechanical

It is pulling out of the top end of the PEEK. Destroyer, thank you for the explanation, it makes sense now. If I understand correctly, you are saying assemble it so when it slides out, I can remove the plug, re-assemble it and the white collar should be locked much tighter. After reading your reply, I took a much closer look at the end of the Bowden tube where it has been pulling out. I slid the tube through the collar and you are in fact correct; where it ended it was grabbed much tighter. However, I am struggling to come up with a way to implement your suggestion. The bowden tube does not slowly slide out, but rather pops out very quickly. When it moves, it moves almost 3/4 of an inch or so. This is too much for me to simply allow it to slide slightly, remove the plug, re-tighten the thumb screws, and have it clear the wood and seat nicely in the PEEK. I tried the toothpick trick and it does help quite a bit but I am still experiencing the same problem to the degree that I cannot print a part. I have ordered calipers and will measure the end of the bowden tube as soon as I receive them as it was suggested it may be too small. Would it be possible to jam the bowden tube onto the brass barb? Thanks to everyone who has replied. I have been struggling with this every night for over a week (and am starting to get frustrated), so I truly appreciate the constant flow of suggestions to give me new things to try. From what I understand though, the magic fix for this problem is to print the bowden clamp on thingverse. While I am not ready to give up yet, if anyone is willing to print one of these for me I would gladly pay for your time, material, shipping, and a six pack (or even case) of your choice. Thank you!

The picture quality isn't the greatest but it's the best I could get right now. The chamfer looks fairly deep to me but the white clamp only sticks up enough to get the horseshoe clip on. I couldn't think of a quick fix if the chamfer is in fact too deep - any suggestions? The grey in the picture is some JB Weld that I tried but it didn't stick to the PFA. I think that the teeth in the white clamp are starting to get stripped. Is this a standard part I can buy here in the states to swap it out? What would I call that piece? I apologize I don't quite understand your suggestion. Do you mean to clamp the bowden tube in temporarily or permanently? I was thinking of trying to clamp the tube with a hose clamp but couldn't find a great spot to get it in there. Plus I was worried about squeezing the tube too much and not allowing the filament to pass through easily. Thank you for the responses and the help. I've been working on this for several days now and haven't been able to get it working. I'm starting to run out of ideas.

I recently built an Ultimaker and was able to get prints of decent quality out of PLA. However, the bowden tube backed out of the extruder during a print. Since then, I cannot make the tube stay in the clamp. I've tried all the suggestions I could find including cutting off the end of the tube to get a clean surface and nothing seems to work. As soon as I start to extrude, the tube pushes itself out rather than feeding the filament. I have seen the bowden clamp on thingverse which I hope would solve my problem, but unfortunately I cannot print at all so I cannot make it. Is there a temporary solution which would allow me to print the bowden clamp? Thanks