Classic SeaCraft Community - priming aluminum

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- Repairs/Mods. (http://www.classicseacraft.com/community/forumdisplay.php?f=6)

- - priming aluminum (http://www.classicseacraft.com/community/showthread.php?t=21956)

3rdday

09-21-2010 09:35 PM

Re: priming aluminum

Whatever you do, do not use a polyester gelcoat. It is hydroscopic.

BigLew

09-21-2010 10:44 PM

Re: priming aluminum

Quote:

Whatever you do, do not use a polyester gelcoat. It is hydroscopic.

I'm sorry, but I am not familiar with "hydroscopic." Hydrophyllic and hydrophobic yes but, Hydordroscopic no. What does that mean? Maybe, water will penetrate through it?

Blue_Heron

09-22-2010 07:07 AM

Re: priming aluminum

Quote:

Whatever you do, do not use a polyester gelcoat. It is hydroscopic.

I'm sorry, but I am not familiar with "hydroscopic." Hydrophyllic and hydrophobic yes but, Hydordroscopic no. What does that mean? Maybe, water will penetrate through it?

Couldn't find "hydroscopic", but how 'bout this:

hy·gro·scop·ic
adj
Definition of HYGROSCOPIC
1: readily taking up and retaining moisture
2: taken up and retained under some conditions of humidity and temperature <hygroscopic water in clay>
— hy·gro·scop·ic·i·ty\ noun

Dave

3rdday

09-23-2010 11:11 PM

Re: priming aluminum

yes, you are correct, I fat fingered the "d" in lieu of the g. Hygroscopic. Ovviously, choose the polymer that is least hygroscopic. Or, one that is most hydrophobic.

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