Get a short piece of copper pipe that fits reasonably well over the threaded
end of the shaft, cut it about an inch long, and then split it lengthwise
(so that it's a nearly-closed C shape). Put it over the threads on one end
and grab it with a pair of water-pump pliers (my preference) or vise-grips,
while you tighten or loosen the other end.

I'm with you, though. Why in the world can't they put some kind of shaft
lock on the damn things?

Tom Dacon

"Grant Erwin" wrote in message
...
I have a little Rockwell 3-phase grinder I picked up recently. It had been
wired completely wrong and today I rewired it and it runs smooth as glass.
I have the same problem with it that I have had with every bench grinder,
though. The shaft spins one way, so the wheels rotate down towards the tool
rest. The nut on one end of the shaft is RH and the nut on the other end is
LH. If I put a wrench on both shaft nuts and crank, one will loosen. The
question is, how do I loosen the other one? I can't for the life of me see
why grinder manufacturers don't put a hole you can put a pin in to lock the
shaft for changing wheels. I sure don't want to put Vise Grips on the naked
threads - what is the trick I'm missing?

GWE