insert in on the bottle as much you can and than push with your thumb from the bottom right up.

I personally broke only ones that were poorly printed, but fellows I gave them to broke them easily but its just 7,5 g of plastic you can print another one if you break it, I found out that this beer opener for some folks have learning curve.

with the one wielding usually, I opened easily over 100 bottles with no issue.

recommended print orientation is on side so the hole will make C shape, its the strongest orientation from my “research”, also you can disable the bottom/top layer and put in some nice infill I usually print them 15% 2 walls

well, hope you like it, because I like it a lot.

one more time: don't forget to insert it all the way so it wont break