Lots of different methods for different types of tanning/preserving. I want to try bark/veg tanning. Check out buckskin revolution on YouTube and her website. Alum tanning is more for fur skins. I haven't used alum but have made sulphuric acid solution (pickling) with rabbit and mink skins.
Discussion
Thanks for the tip! I'll look her up.
How do you get rid of the sulphuric acid solution after you've used it? I would think it's not something you want on your land (or maybe you can neutralize it first?)
You can neutralize it with a base. But I don't really worry about it. I just dilute it and spread it out. It's just sulphur, oxygen and hydrogen. Our soil has lots of calcium carbonate in it which neutralizes it. I've tried using it as a dissicant spray to kill weeds with little effect.