"MARTYN!!! FFS, yes, I know you're from Sheffield but do we really need the fire hot enough to melt steel???"
Mum and Dad had the old cast-iron range taken out and a Rayburn fire put in many years back. The installer told us he'd seen liners ten year old with not a mark on them. Ours lasted 12 months Old sleepers, telegraph poles, oak blocks from work that were soaked in oil from jacking big lathes out with, lignum blocks from old conveyor belts, literally anything wooden got burnt! Chainsaw blades didn't fare much better with the hammer we gave them. Happy days
I guess that you have got a chainsaw sharpener? When I got one it stopped me screwing up the chains and saved lots of time. It also meant I could cut a straight line rather than a curve to either left or right. Apparently doing it by hand is better if you are good at it. If.