I have split veg-tanned and it worked nicely, but had no luck splitting any of the chrome-tanned that I've tried. Probably operator error, but the blade simply would not cut into the material. I tried several adjustments, but could not get the blade to cut into the material. I have many different types of chrome-tanned leather, and did not try it on all of them, but only where I had a certain need, and that leather was heavily oiled with lots of pull-up, a very dense material.