I've tryed tanning beavertail once. Have experince braintan deer hides so I thought I would give it try. Split tails with fillet knive, flesh and flesh and flesh,, get all that fat off the skin, washed tails in warm lightly soaped water, used a chemical tanning solution, orange bottle stuff, tails came out very very stiff and hard. More solution maybe? Noticed the exterior of the epidermis layer flaking away. Maybe remove this epidermis layer? Don't really know what went wrong but certainly didn't come up with a usable product in the end. Good luck to you on this one....