Foldable cup holder with screws

thingiverse

I assembled the original design by 3Deddy without any issues, so I decided to modify it slightly to attach with four M3 screws or bolts instead. You can also use some 3mm filament if you prefer. Compared to the original, I made the springs 1mm thinner as they were too stiff, but the small clasp/lid that holds everything shut is still quite firm, maybe a bit too firm. Using sandpaper may be necessary in this case. I had minimal trouble removing the support from the springs, so I printed the backplate horizontally. However, you might experience different results; printing it vertically will avoid the problem but take significantly longer. I've used it successfully for my simpit: https://www.thingiverse.com/thing:3124839