That is amazing. I just took a rock out to dry earlier today. I'm gluing my yellow leather to it. It had unattached (slowly ripped itself) off the original rock. It loves being on the bottom of the tank in the aragonite. Been there a few months. It's between a brain and a hammer and though there is space and rubble between, the current worries me. Now I'm wondering about your thead method. I read somewhere that worms will eat leathers on the bottom. So maybe a stich in time saves nine. Oh, that is sooo bad. Now I'm off to figure where in the reef to sew my little friend.