Do you guys have any info on some decent fittings? I recently got some new tubing and when I tried to put it in, the fitting just couldn’t hold it well enough. I thought that maybe some new fittings would help. I found these online but they look exactly like the ones that came on my printer. I assume they are of the same quality. So I was curious, do you guys know of some that are better without breaking the bank? These are $5 and I’d like to stay somewhere around there if possible. I just want something that works decently well.
This is a good read:
Had that exact model and same issue as you.
Found that the small metal clip inside the fitting that is compressed and grabs the tubing had broken.
Ended up going to a local company that sells air compression parts. The fitting is a 5mm fitting for compressed air tubing. Can’t remember the brand, was italian I think, and while it was only €5 each the quality was way above the one that came with my printer kit.
The fitting i got does require a clip to reduce “backlash” in when retracting so perhaps the one suggested in the guide Eric linked would be better.
Walter also designed these to go along with them:
@Eclsnowman Nice! What do you think about this fitting. I work for a custom automation company and we buy stuff from this website all the time.
@Kevin_Danger_Powers seems fine. There are a ton of industrial brands (smc, parker, camozzi, john guest, etc.)
Just need to find the ones you like. At work we use camozzi. But then again, almost any will work well if you use the clip to keep them from getting a “running start” to wear the teflon tube and eventually pop out. The problem with these fittings is not how well they grip under load. It’s how the grip after 10,000 load/unload cycles along its central axis. Thats what tends to coldflow the Teflon tube causing failure.
These fittings are meant to be pressurised from the inside out (via pnuematic or fluid pressure. We don’t do that. We put all the pressure in tension along the length of the fitting. Its unbalanced compared to the designed loads they are meant to see.
That being said, I have fittings with years of use and no issues from a variety of brands. Use a good fitting, and use the clips and you should be fine.
I love Crackmaster-Carr. It’s to the point that all McMaster boxes get routed through my office at work whether I ordered it or not.
McMaster Carr.
I like these. JOHN GUEST PM010401E-PK10 Male Connector,4mm Tube OD,Black,PK 10 http://r.ebay.com/dYeG3O
@Daniel_Kruger that’s $28…
@Kevin_Danger_Powers For ten.
@Daniel_Kruger yeah but I only need 1.
@Kevin_Danger_Powers Sorry, they are like a plastic version of the e3d kind. You can actually get the tube out after subjecting it to a bondtech bowden jam.
@Daniel_Kruger I think I may try these. They are like $3 each.
@Eclsnowman I looked at the bowden coupler review you linked to, and it links to a Robotdigg source that has two models, but the post doesn’t say which of the two models it applies to. I don’t know the difference between “4-01” and “4-M5” (though I can guess at an M5 thread somewhere in the latter) and google search isn’t helping much. Do you know more?
@mcdanlj I don’t. But you can email robotdigg. They have always been helpful to me.
Found it! The google images “visit” link didn’t work, but this chart says what to look for.
missing/deleted image from Google+