Tapered barbed fitting to m12 threaded compression
thingiverse
This is a tapered barbed fitting for a vacuum pump. The pumps are common but I could not find a tapered barbed fitting anywhere for it. It works surprisingly well when printed in the right orientation. The threaded fitting would not fit quite right for some reason, so it is an m12 fitting scaled by 0.95 in the x and y dimensions. Possibly it is because it is actually a non metric fitting or something, but this appears to be close enough. The seal is made at the end of the threaded rod, not along the threads, so they don't have to be accurate. It will probably take some gasket maker or something to seal it. Use a brim or raft when printing if you print at 100 percent infill or it peels off the print bed probably. Tested with petg.
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