This is a cupholder I designed for the rail system used by Permobil wheelchairs. I printed this in PLA but soon realized that it is a far too rigid material and will easily break. My next try will be using ABS with which I have no experience so far.
The rail adapter is designed to be a pretty loose fit since I had to file and hammer the first one in. Now it is a bit too loose but ok for what I need.
Since this is only the second 3D model I created I'm sure a more experienced designer can improve this a lot.
For the rail adapter/holder I remixed ThunderCatFPVs Permobil model.
20 - 100% depending on part
Edit: I uploaded the body again in lying flat for better printing.