|
I bought a Stihl 14 or 15 years ago and use it quite often for clearing brush and deadfalls and cutting firewod. Still has the original chain and cuts through everything from dead sumac (you can break it by hand) to seasoned oak like as if the chain were still new. The chain has never been "really" sharpened from a butterknife-dull state. I did dress it up once with a small hand file. Did the trick.
I make sure I never put the chain anywhere near dirt. And keep plenty of bar oil in 'er (automatic oiler).
Your problem could stem from your source of wood. Several years ago I helped clear away a LOT of dealfall from hurricane Hugo. We didn't hit any rocks or any other "non-wood" materials with the saws, but we had to stop and re-sharpen every couple of hours or so.
We figured the chains were going dull so fast due to the dirt in the bark of the trees. The logs had been wallowed around a bit before we started cutting them up.
Since the wood you are going after is at the dump and has probably been move around some, the dirt that has been picked up in the logs could be doing the deed.
|