Sounds like you have an electrolysis problem.
One way to find out is to tap them with a hammer. Good Bronze will sound
sharp. Honeycombed electrolysis plagued will thud. Watch out though, If it
is as bad as the other it might break off.
Color is also a good indicator, but even the best thru hull might have a
bit of pink on the surface.
Best to do the tap test in shallow water ;-).
Philip
At 11:09 PM 4/29/2008, you wrote:
I had a 1.5" through hull fitting break off in my hand. It was
pink/orange and granular at the fresh break. Is this electrolysis and
will all of the through hulls be equally bad? None are grounded, boat was
built 12/99. How could I test the others? If I file a corner off, will
the odd color show?
Lee Haefele
Leopard 38 cat, Alesto 2.
Philip & Marilyn Lange
AE4OV & KD4JRC,
ORYOKI
Witness 35 Catamaran
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