I was planing some of the hard maple yesterday for the counter top project and found some metal. I was surprised I didn't hear it when it went through the planer. I had a magnet handy and it didn't stick. I dug it out with a knife and figured it was lead. I was busy and didn't think much about it. As much as I shoot, I am surprised it didn't occur to me that it was from a bullet or other lead shot! I can't tell that it hurt my planer blades at all. I am happy about that because I had just changed them!