I've kept porcupine puffers for about 20 years. Three of them to be exact. I always feed with tweezers.. Years ago I came up with a very simple hack on a standard set of tweezers. I purchased some diamond dust coated files and cut them about an inch long. I then epoxied them to the ends of the tweezers. When the puffer grabs the food he is biting down on the files thus grinding down his beak/teeth. I've been feeding this way for well over a decade with zero issues. I rinse them in fresh water and dry after feeding. I'm actually surprised no one makes something like this. There will be a tiny bit of rust at the cut ends but it doesn't cause any harm. I'll try and grab a video at feeding time tomorrow.
