The power sharpeners are fine for the guy cutting firewood next to his house, or the cutter who uses his saw less than 4 hours a year. The downside is once you use them on your chain you have to keep using them. A file will give you way more life in your chain and easier to touch up every time you fill up.
Interesting point as to the original post. I'll stick with the little plate to slap on and file them down but good to know!
I cut some 70+ km from my house and take a half dozen chains and two bars with me, each time I refuel I drop on another chain and change the bar over as it saves getting fingers hot and keeps my chains in good order.
I cut black box and river gum which has a lot of dirt in it from white-ants...I don't piss about with chains and files as I am not interested in sitting about touching up chains instead of cutting.
Eight to ten loads gets us through winter, the fire will be lit in another week and it will go out around September/October.
Oh...and I am down to an even dozen chains for the 372 and a half dozen for the 455...both are 3/8 .058...seems to work for me.
