I can take one off when I am back at my machine and measure the thread length. maybe the Mettle Air elbows have are different than those from Amazon suppliers.
Sounds good, none of them seem to actually give a length on the threads, quite annoying.
Thanks
Tom
I think I found the issue, the ones Iāve purchased from Amazon appear to be the same as the ācompactā version of the Mettle Air piece. Iāve ordered the regular version from Mettle Air as that seems to be the only place to find them. And paid their quite ridiculous shipping! $22 for a few little fittings, ridiculous.
Iām going to try PTFE tubing I think, just wondering how it will work with compression fittings. Itās quite readily available for a pretty decent price due to the use in 3D printers. The true 4mm nylon seems to be a bit pricey.
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I am glad you have a solution and path forward. Please let me know how it works out once the components arrive.
Oiyā¦ this isnāt working out at all. I received the fittings from Mettle Air today and they are exactly the same as the ones I had sent back to Amazon with the threading too short. I ordered the ones on the top left with no o-ring and what appears to be a longer threaded portion. I got what appears to be the C version in the middle with the o-ring. Iām getting a bit frustrated with this. If you have any insight into what will work for these fittings, it would be greatly appreciated.
Thanks
Apologies for the delay - was away from my home for a few days.
I checked my invoice and I had also purchased the mtl4-m6 connectors.
I took one off my X50 ball screw nut. There seems to be enough thread to hold it on tight and the integrated o-ring seems to do the job of creating an effective seal. I measured the end of thread to the metal o-ring seat and it looks to be over 4.5 mm but less than 5 mm of available thread.
I am not sure what may be causing the issues you are experiencing.
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Ahhh thereās the issueā¦ yours is a 1610 ball screw on an X35 by the looks of it. The x50 rails have the ball nut recessed into the gantry block so thereās about 4mm of gantry block to get through before you reach the threaded portion of the oil port on the ball nutā¦ Hmm starting to look like a machine shop for a custom fitting. I can 3D print it but am concerned about longevity and the fitting breaking in the port. Which I guess wouldnāt be the end of the world, it would be plastic and fairly easy to remove. Appreciate the pic it helps explain why Iām having such a terrible time finding a fitting that will work.
Thanks
Tom
It actually is an X50, but I installed a 1610 ball screw in it as I did not want the higher pitch of the 1616.
A few ideas:
Depending on the size of the access hole in the gantry block, perhaps an M6MxM6F adapter could work (Mettle Air makes them as well as other sources)?
Or, a hollow M6 threaded rod cut to size, and a new female M6x4 mm OD push connect fitting?
Do you have this issue on the Y axes as well, or just the X50 rail?
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Itās X and Y rails on my Elite. Iāve been searching for an adapter as mentioned and have struck out. Guess Iāll have to look harder. Probably need a minimum of 6mm male thread, max 10mm. Iāve 3d printed some that are functional but definitely not ideal.
The hollow rod might be a very clever solutionā¦ Hadnāt thought of that at all.
Cheers
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