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Old 17-11-2010, 20:07   #1
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Advantages to Painting the Stick ? !

based on casual observation i would say that the majority of the aluminum masts i see are painted,
mine is not currently painted, and i have no problem with that, but is this something i should consider?

does painting the stick greatly (or even marginally) increase its lifespan?
is it a necessary layer of protection or merely aesthetics?
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Old 17-11-2010, 20:26   #2
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Purely aesthetic, according to my Hall Spars manual.
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Old 17-11-2010, 20:29   #3
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you'll never worry about scratching the paint you don't have.
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Old 17-11-2010, 20:37   #4
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Actually Zinc Chromate paint will do a lot to prevent corrosion in aluminum. It has been used on aircraft for years to prevent aluminum corrosion.
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Old 18-11-2010, 05:17   #5
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Purely aesthetic, according to my Hall Spars manual.
cfarrar is spot on here and I can add not only according various spar manufacturers, but also according to common sense.

By all means paint if you want a particular aesthetic appeal otherwise spend your time and money elsewhere
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Old 18-11-2010, 05:53   #6
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Mines 38yrs old and looking a bit (very) shabby and I've been considering an epoxy/dye coating or three... its more a toothpick than a stick...
light sand.. wipe down with Acetone then West it fast n furious....
Good or bad idea....
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Old 18-11-2010, 06:06   #7
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Wax your bare aluminium to stop corrosion ... cheap & quick once a year ... problem solved.
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Old 18-11-2010, 06:17   #8
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Actually Zinc Chromate paint will do a lot to prevent corrosion in aluminum. It has been used on aircraft for years to prevent aluminum corrosion.
Where can you still get zinc chromate primer (/w Chromium VI)?
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Old 18-11-2010, 06:26   #9
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Our mast is awlgripped. Prettiest mast on the mast rack at the boat yard

Is it helpful or good? No idea, but its pretty

It is holding up well!
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Old 18-11-2010, 07:53   #10
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Eh..if it looks bad scrub it a bit and make it shiny..then wax it..OR..if you're gonna spend $$$ on it get it anodized..
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Old 18-11-2010, 08:46   #11
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Here is a link to NASA's technical paper on using Zinc Chromate to protect aluminum

http://ntrs.nasa.gov/archive/nasa/ca...1996043922.pdf

Zinc Chromate self etching primer protects aluminum. The zinch chromate paste is good for wherever gavanic corrosion is a possibility. Zinc chromate has been around since the 80's. Every aircraft manufacturer uses some form of it. I won't go into the details search the internet for "zinc chromate on aluminum". Every major sailing magazine has written articles on the advantages.
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Old 18-11-2010, 08:54   #12
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Old 18-11-2010, 09:14   #13
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Anodizing will last longer than you. Paint looks pretty but eventually fails.

My understanding is that environmental restrictions on anodizing (you need an anodizing tank as long as the mast) is behind the switch to painted masts in larger sizes.

While painted masts are pretty, the paint fails first usually seen as bubbles near stainless screws that were not well enough coated with tef-gel or similar. Repainting a mast properly means removing all the hardware - a very expensive proposition. I've pulled every screw and stainless fitting on my mast and recoated them with tef-gel and put plastic insulating tape between the fitting and the mast.

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Old 18-11-2010, 09:14   #14
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I've had both. I wouldn't paint it, since any corrosion that occurs will be localized to paint failures. General corrosion, over the length of the mast will have no bearing on usefull life, while localized corrosion will.
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Old 18-11-2010, 09:59   #15
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Here is a link to NASA's technical paper on using Zinc Chromate to protect aluminum ...
I wasn't doubting the efficacy of Zinc Chromate on aluminum, merely it's ready availability to the (non pro') consumer.
I haven't seen it on the shelves, lately.
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