am. But oak is a very hard wood to split. Even at that, it takes a long time to cut through (at the part I'm at) to cut through about 24-30 inches of hardwood with a 16 inch saw. It's also almost impossible to cut from opposite sides and hafe the cuts line up, so it still takes almost a two or three hours to make a complete cut.
The chains are bing dulled by a combination of rotted wood and the occasional nail. Check that, not "occasional", but "common". I'm still mystified, also, as t why rotted wood is so hard on the teeth. Why there are so many nails in the upper part of the tree is anyone's guess. One thing I need is an electric chain sharpener. Next on my "to buy" list. I tried using a manual sharpener, but, frankly, it didn't seem to help much, and got real old, real fast.
"I reject your reality, and substitute my own!" Adam Savage, Mythbusters