"ve3..." wrote in message
oups.com...

I got a can of "Gunk" Belt Dressing, sprayed some into a glass,
and applied it to the cord and the tuning shaft with a camel's hair
brush. That was three months ago and the tuning has been fine ever
since with no slippage. The belt dressing is the type used to spray on
automotive v-belts.

My National NC-140 has an aluminum disk that originally had a coating on the
outer edge that was supposed to ride inside a grove on another disk. The
coating had worn off and it was slipping. I applied the same belt dressing
that you used to the outer edge of the worn disk about 10 years ago and it
is still working as it should today. RM~

PS, I keep a can of that stuff around, use it on table saw, belt
sander,drill press, air comp and etc., it's great stuff but never apply it
to a notched automotive belt, my son learned the hard way.