The other day a gardner friend of mine dropped off some Mesquite logs and the stump for me. Yesterday I cut them up and sealed them as usual. The last pc to do was the large stump. See Pictures below
I set up up on a old dried out tree stump I use for cutting up blanks on and started to cut it with my electric chain saw. In a matter of seconds the blade got hot and started smoking and not cutting. I thought that the blade was just dull becaue it had been on the saw for a long time. I sharpened it up with my Granberg hand file and tried again. Still smoked and would not cut so, I put a new blade on the saw thinking the other was just to damaged to be sharpened. Again, in seconds it I ruined the new blade. So, I thought well there must be a stone or metal buried deep in this log were im cutting. Took the new blade in and sharpened it up and went back to start in a new spot. Same thing happened in seconds. So, I gave up after ruining my blades. The blades were ruined and even sharpening did no good so I threw out the and bought another set of new ones.
This Morning the gardner came by and said he could cut it for me with his big gas powered chain saw. He started it up and tried to cut it in another new area on the log and in seconds his blade was ruined also.
The only other time this happened to me is when I was trying to cut up some dried out Ironwood and dulled the blade