This basic bottle opener is designed to fit a 10 (euro) cent coin.
You can either print the slot using basic supports or use the “pause at height” feature of the PrusaSlicer.
This bottle opener has been the foundation for my Panther Bottle Opener.
I printed one (only) to test whether the foundational design works. As time passed, it became one of my favourite openers. It lasts since I designed it a few months ago, having opened a few tens of bottles, even though I printed it quickly with low infill.
The author marked this model as their own original creation.