Tradslinger,
I chased some super thin Osage rings a while back. It takes really good light and I don't mean an LED. I'm talking sunlight at just the right angle. I sometimes had to go outside the garage with the stave and walk around until I could see the ring, mark it with a pencil, go back in the garage and scrape till I got lost and do the same thing the next day because of clouds, sun position, time of day....number of beers, etc. took forever and still ended up backing with rawhide just to be safe. Morale of the story is....good sunlight and patience is the key. Can I get an Amen?