Universal Ring Pull-Tab Can Opener

thingiverse

This can opener fits all types of food can ring pull-tabs. It accommodates pull-tabs up to 28mm wide and fully engulfs a 31mm long pull-tab, ensuring a complete seal instead of just bending the tab. A bent tab occurs when the can seal is hard to break due to an insufficiently deep pull-tab pocket. These ring type pull tabs are commonly found on many food cans including soups & chili, sardines, oysters, pet foods, mushrooms, and nuts. This opener makes a great gift for people with limited ability to open these types of cans. My wife likes this opener because it protects her fingernail polish. It also works on most cans with pop tops like soda and beer cans. I've included a slot that holds up to two 1mm x 10mm round magnets. You may want to try one magnet first to see how well it sticks to your fridge. Images 5 & 7 of the can opener show how the magnets are inserted, held in place by friction. Get the magnet started by pushing it into the slot by hand, then push the opener down on a flat surface until the magnet is flush. A flat-bladed screwdriver works well for fully seating the magnets into the slot. Note: Be sure to observe magnetic polarity when inserting two magnets. The magnets should attract when held edge-to-edge. The black Sharpie marks on the magnets in the last image show how I keep track of the correct orientation when inserting them. The openers in the images are from previous test versions, but Version 9 STL has a larger 6mm hole to hang the opener on a hook. You may want to check out my Pop Top Can Opener - Final that was the original inspiration for this larger opener. It works especially well for new smaller soda cans with pop tops.