Bottle Cap Opener - Strong and Simple

I posted this bottle cap opener design because I saw people with openers they said fail. Printed with 1.2mm walls, .2 layer height, and 28% infill, from Filiament OutletPLA and hatchbox brand PLA, 1.75 mm with a cold bed, I have tested both styles (Penny and no metal) on over 100 cap opens (I have a bottle capper for the standard 26mm caps, not a drinking problem :D ) and the results were:
The "no metal" had some scratches at the opening surface, but nothing significant, no cracks. This may