P.B.C.O. - Plastic Bottle Cap Opener

thingiverse

This bottle opener should easily fit onto every plastic bottle with a cap diameter of less than 30mm like water bottles, Coca Cola bottles and others. To complete this project, you will also need: A steel file Two M3 x 20mm screws Two M3 nuts An M3 x 16mm screw could work for fastening the attachment, but it's best to shorten it anyway to ensure a perfect fit. It won't affect anything if it's not exactly right. Make sure you sharpen one of the screws like the pictures show. It will act as a tooth on the bottle cap and may not work properly otherwise. If the screw is too long, it can cause problems with the functionality, so try shortening it a bit more if necessary.