Looking for a wiring “buffer” type collar to protect some 3-strand (16 AWG) wire for 115v wiring for changing motor on a bandsaw. Something like this (on the old one):
…But for this hole here (on the new one) which is about 21.9mm:
UPDATE: Apparently they are called a wiring grommet… ?
OK, found this one:
And this one:
And this one.
I think the very first one is more what I am needing.
I’ve used this one in the past for my printer. Printables
I would usually refer to the flexible ring as a grommet and the containing ‘nut’ assembly as a cable gland - might bring up other options on a search.
Thanks! The “gland” nomenclature is new to me. The listing that @barry99705 linked uses that. It calls the part that clamps down on the cable a “wedge.”
I’m going with the one Barry linked. Based on my calculations, I need the whole thing reduced by 87.5%, except I need the wedge reduced on the outside, but not on the inside, so I chose a wedge that was too large on purpose, by about 114.29%, so that when I reduced it, the inside would get back to the right size.
By the way, in the two pics above, the first one is the 1/2" HP motor that came on the Vevor 10" bandsaw. The second pic is a Vevor 1.5 HP motor, that I am working to install on the bandsaw instead.
I’m down to the only thing needed being whatever pulleys I will use.
I just bought a set when I needed waterproofing.
They are several pieces:
A nut with a rubber gasket, the center plastic through hole with fins on the exterior that can be compressed. A piece of rubber tube for inside the fins that seals against the wires, and finally a compression(?) Nut.
I’m guessing that you could design a printable version with PETG and TPU?
Designing for 3D printing
Step 1: Check if it already exists 
Yep, exactly. I found that there were several to choose from, and I went with the one that Barry, @barry99705, had linked for me. This one: Printables
It worked for me just fine. I did have to scale it all down to my knockout hole size, and then from there I had scale up the outer parts that thread on, as they would not fit until I did. That may be due to a slight bit of over extrusion. In cases were male and female threads are being printed, any under or over extrusion has an effect that gets doubled.
