Ha! I knew it would kill my saw but I had 5 huge ties soaked with creosote. I have been wanting to do steps around to the basement (don't have them inside) for 10 years now. Well, yesterday I got a we hair and finished it. However the chain is finished. I made 3 cuts per tie so 15 cuts. I resharpened 6 times but the last 2 times didn't help. Looks like new chain time. Steps are done tho!