Hi Guys, First post, great site BTW. What is the major difference between chrome and alum tanning? I only ask because I initially read an article in a magazine outlining tanning skins. In a nutshell it was: salting, fleshing, tanning in alum sulfate, drying/oiling. Then I bought a tanning kit (after my skin was in the tan outlined in the mag), which has alum sulfate as well as chromium sulfate, the kit uses BOTH chemicals. What are the reasons for using chromium sulfate after the alum sulfate mix? I have a second hide that is salted, I was planning on finishing this first hide with just the alum sulfate method from the mag, then trying my kit on the second skin completely including chromium sulfate. Any info about the two processes would be greatly appreciated.