On Friday, December 12, 2014 5:50:19 PM UTC-5, Robert Macy wrote:
Have an Insinkerator(sp?) garbage disposal unit in the kitchen.

Badger 1-83A with a power cord.

The kitchen sink was not used very often, and the disposal not run for a
while, suspect rusted 'solid'

Called 800 558 5700 and was told the wrench should enable to unstick [it
did not] and don't recommend using any chemicals. Probably have to
replace. Ok, so if I have to replace what do I lose by simply trying
chemicals?

Does anybody know some way to unstick this thing?

maybe muriatic acid to eat rust, or Whink, HF acid, or ?? I tried
lengthening the short 1/4 inch allen wrench to about a foot, but still
solid.

Any ideas? I even tried the 800 ft-lb 'hammer wrench' feature of
Rockewell's 3Rill drill to no avail. May have started to strip the allen
wrench hole, though.

I assume you tried moving it in both directions? If it's not just
rusted, but had something stuck in it, then it might only go in the
reverse direction. If that much force won't loosen it up, I'd say it's
shot. Unlikely even if you get it to move that it will free up enough
to work right or last much longer. If I were going to try something,
I guess some light oil poured in and allowed to sit for a couple days
might do something, but I tend to doubt you'll resurect it. Also, how
old is it? If it's 10+, that's more than you can expect. I see new
basic ones going in just 895 years.