"Bob Engelhardt" wrote in message
...
Karl Townsend wrote:
You'd best move up to stainless fasteners. AL does this to steel.

But it's not the steel that's the problem - it's the aluminum. For
example, one of the fastenings is a through bolt with a nut. I had to use
an impact wrench to loosen the bolt shaft in the smooth hole!

This is a nice tool, but definitely not made to be repaired. I think I'll
send them a note! Polite, but pointed.

Bob

Oh, I know what you mean. I've got several AL irrigation pipes that have a
steel pipe threaded in for the riser. If you twist on the riser pipe it just
takes a layer of AL with it.

Karl