Originally Posted by Deejay
Hi Uncle Grumpy, and welcome to the forum, I have some info for you ; just click HERE
and scroll down to see all the sharpeners....
Hoping this helps,
cheers2

That link has the oregon bench grinder I am thinking about but I am sure they used to make a portable 12volt version.

But i guess i could have a dozen chains for each size and grind them at home.

cheers