Disclaimer of liability: Anything done to your car is at your own risk. I cannot be held responsible for any damaged caused.

Update, 1/11/2022: I corrected ring-top.stl, which had somehow been uploaded too tall (6mm where it should have been 4mm). If you downloaded the files before now, you'll need to redownload that one, or scale down its height in your slicer. Thanks to amarissimus for catching this and pointing it out to me!

This is based on the cup holder I designed to fit in a Saab 900, but I took off the fitting specific to that car to make it more easily modifiable. You'll need to do some design work to attach a new fitting to the "ring-base" file such that it will attach somewhere in your car. That part's up to you, but if you can sort out a place to put it, feel free to use the rest of this cup holder model however you see fit.

I'm including "ring-base" as both an STL and a STEP file to facilitate whatever modifications you may need to do.

See also the double cup holder: https://www.thingiverse.com/thing:5184066

As always, if you enjoy this design, feel free to tip me a coffee!

Printing

You'll need to use two different filaments for this model: a solid filament with good heat tolerance (I recommend PETG) and a flexible filament (I recommend TPU).

• The STLs "ring-flex" and "platform-grip" should be printed in TPU, and the rest should be printed in PETG.
• Print "leg-side" twice.
• For extra durability, I added a bunch of walls and top/bottom layers, and I used 50% infill.

Assembling

1. Start with "ring-base."
2. Place "ring-flex" on top of "ring-base." It shouldn't ultimately matter, but I prefer the way it looks for the fold lines on the flaps to be facing downward.
3. Place "ring-top" on top of "ring-flex" such that it forms a sandwich with the TPU piece in between the PETG pieces.
4. Slide the two instances of "leg-side" into their slots on either side. Note the portion of "leg-side" that curves, and use that to inform the direction in which you place it. The small tabs on either side of "ring-flex" should go through the holes on on the legs. It may take some finagling, but this should ultimately hold the legs in place securely, and they will hold the rings together.
5. Push the tabs at either end of "platform-grip" into the holes on either "leg-side." You may need to bend the ends of "platform-grip" in half to make it fit. The end result should see the grooved grippy side facing upward.
6. Place one tab of "platform-base" into the hole on one instance of "leg-side." It should go underneath "platform-grip." Then slide the other end (with some effort) into the hole on the other "leg-side." This action will stretch "platform-grip" to make it fit, but that should be fine, and it will then hold it securely once in place.
7. Place the completed cup holder into your car!