bevel the edges of your vegtan leather, sand (optional. I usually don't unless two pieces don't quite match up), dye (optional), wet the edge using a little water, gum trag (let it soak it some) or spit (I just lick the edge. gross, eh? *L*), rub back and forth quickly using some (not a lot) pressure until it's smooth, slick and if it's 2 or more pieces it looks like one piece. some people use antlers or a piece of wood with a groove that's the right size or a plastic wheel (that didn't work well for me) or a piece of cloth. a piece of old winter weight bdu's works great for me. I just wrap it around a finger or 2, bend my finger over the edge and rub very quickly back and forth. voila! pro style!