buy cheap initially, you are goin to ruin some, it's the price you pay to learn. You can have it stabilized if you like. If you get a piece that is cracked or weak, use thin super glue and let it wick into the cracks. Drill with sharp bits like wood. Use a scrap piece of wood backer to prevent breakout when drilling through. When grinding it, don't get it hot. The hotter it gets, the more it moves and you will never get it flat. You won't ruin it getting hot grinding, it just keeps curling away from the heat and then when it cools it curls back and it's bowed. After all that, it's a gas to work with and very rewarding when you get a nice set of scales mounted and the knife finished.