sharpening--12v mini grinders?

[StanS]

In all the discussions on sharpening I don't remember anyone discussing using the small 12v hand held mini grinders. Since I'm not an expert with files, it's easier for me to sharpen a straight edge with a 12v grinder than with a file.

Any comments about using these grinders versus files?

 

[MasterBlaster]

I don't like em. They are good (sorta) for getting a rocked-out chain back in condition in a pinch, but that's about all I've ever used one for.
I much prefer to hand file.

 

[Crofter]

They put an excellent edge on the tooth and smoother surfaces than you commonly get with a file. They are good for touching up wood dulled teeth but are not good at removing much metal such as is necessary when you are hitting dirt often. The file is much better at horsing off damage. My son uses the little grinder for touching up when he is milling. Can do it without taking off saw.
You still need to learn how to file; the files are cheaper than the stones, quicker and last longer.

Frank

 

[Gypo Logger]

The problem with the hand held grinders, is that they cannot be held with the dexterity that a round file can, although great for cleaning gullets and making race chain, but I would want to stay away from the cutters with one, except in extreme situations.
john

 

[Stumper]

They work. If you have a good eye and steady hand they work really well. Personally I prefer a file-it is faster.

 

[Big feller]

I use a 12 volt Oregon sharpener. For the occasional user they are brilliant and I have used mine to bring a few chains back from poor condition. I use a slow filing action to shift more material, stop the stone glazing, and keep an even profile.
My worry is this - since the grinding wheel gets smaller, that grit must be going somewhere - some of it must go into the saw bar. If you only use the saw a few days of the year it won't be a worry, but my guess is that in daily use unless you strip the bar and chain and wash them off,you would have to replace bar and chain more often, and perhaps the sprocket too.

I doubt I'll use a saw enough to find out. Someone tell me if I'm talking out of my hat...