Got into some frozen locust that was stacked many years ago in 20 ft logs. Bark is long gone and wood is hard and solid. It’s been cold here this week and when I started cutting it into 18” lengths it was like cutting steel. I had just sharpened the Stihl RM yellow chain and it was throwing nice chips in the spalted maple. But almost as soon as I started in the locust it dulled the chain to just throwing dust and scorching the wood. Wood was clean not dirty at all. This locust was very hard and it is always harder on the chain but the frozen stuff was way to tough. Similar but not as bad a deal with some 18-20” diameter red oak that was partially frozen. Cutting with a Stihl 029 super with 18” bar and stihl RM yellow chain (semi chisel). What do you guys do to cut frozen hard wood?