Protecting the mast

Oct 30, 2019
34
I have just spent two days and used 1/2 gallon of acetone cleaning off
paint that a previous owner had applied to the mast and which had
deteriorated to the extent that a fellow boat owner asked me if it had
the 'pox'.
The reason for applying the paint in the first place is now a lot more
obvious as the gold anodising has worn so thin in some places that it
is down to the bare aluminium. In other areas where the mast has been
damaged and the hard anodising breached it does indeed have the 'pox'
where the exposed aluminium and salt air have combined to produce that
'rotting aluminium' appearance we are all familiar with.
I have removed the flaky residue and now need protect these areas
against further salt air reaction.
I know of no way to re-anodise the mast myself and searching the
internet only suggests using an acid etch primer and then car body
primer/paints. Have any owners found other successful ways of
protecting bare aluminium from the ravages of our boat's environment?

David
V-1696 in sunny (again) Cyprus
 
Apr 22, 2008
47
Albin Vega 27 San Francisco
I wonder, if you stripped the mast to the bare spar, inserted it into
a pvc pipe of larger length and diameter, filled the pipe with
sulfuric acid/water solution (10-20%) could you do your own
electroplating? You would need a battery charger, a way of attaching
the positive lead to the mast and a separate piece of stainless steel
or aluminum attached to the negative wire. The negative lead can't
come into contact with the mast. Then the whole contraption would be
laid horizontally and probably a couple holes to vent the hydrogen off
the top of the pipe. Run the voltage for maybe 20-30 minutes then
rinse with hot water to seal.

i suppose to get an even plating, the mast would have to be suspended
in the pipe so that none of the sides would be touching.

Seems like it might work--but boy, it would be a lot of work.
 
Oct 30, 2019
80
Hummmm - interesting idea and might be worth while if there were a
number of spars to reanodise, but a bit too ambitious for me I fear.
I'll stick to acid cromate primer and some gold Hammerite.

David