"Grandpa" wrote: Years ago I bought a 12v dremel look alike that hooks to
my truck battery. (clip)
^^^^^^^^^^^^^^^
I have one like that also, sold by Oregon (made in Japan.) It has a gauge
which helps keep the grinder angle correct. I paid a lot more for mine than
you paid for yours. My local chainsaw store guy tells me those are better
than the bench type that he uses. I think the reason is that they remove a
lot less metal, so the chain can be sharpened more times before it has to be
discarded.