Spend a few bucks more and buy a Diablo drill or another popular brand. I leveled a 36" x 72" walnut slab, I went through it about a foot before it was completely useless. I bought a 3/4" diablo drill bit and finished the rest of the panel on both sides although it was rubbish afterwards but it worked. I wouldn't buy this item again although I did buy a second one to give it one to give another chance because I thought the second one could be better but it isn't.I gave it two stars because I think I used its skills, it will probably take a bit of work on a good poplar or pine afford.