This is a plain piece of walnut that is destined to be a fore end on one of my single shot rifles. Just to see what would happen I stained the right side of the piece with aqua fortis and blushed it with a heat gun. The I added a dilute solution of household lye to the left side. I have no idea what the solution concentration was, maybe 1/2 tsp in a quarter cup of water. I overran the lye onto the aqua fortis, which is the darker red in the center. The whole thing was flooded with a thinned linseed oil solution yesterday. I ran a plane over some of the piece to show the original color. Like most things we do it has probably been done before but it's new to me and shows a lot of promise.