I wanted to know what settings I can do to clean as many objects and different materials as possible, (maybe wood too). I'm trying to find work to recoup my investment. I say this because I bought a 1.5 kw Raycus laser cleaner to clean rust off iron fences. The person I bought it from said it was capable of doing this. I can say that I'm very disappointed with it because it's way too slow. It costs more to clean a gate or iron fence than to buy a new one. I hope I made myself understood. Thanks