Re: [Paddlewise] retrofitting bulkheads

From: Dan Harrison <DHARRISN_at_hfcc.net>
Date: Tue, 20 Feb 2001 15:04:46 -0500
About the sealant:  be sure to use 3M 5200 "Quick Cure", which has at least an hour of "open" time in which to get things all shipshape, then cures overnight.  I made the mistake of using the regular stuff one time on a boat that was in my basement, where it's 50oF in the winter.  Had to put low-wattage lamps inside the hull to get the stuff warm enough to cure, and even so it took nearly 3 WEEKS!
For applications where you MIGHT want to take your work apart someday, use 3M 4200 Quick Cure.   Just as waterproof, bonds just as well to a properly prepped poly hull, but lacks the structural rigidity of 5200.
I like the idea of making a wire form.  As a believer in the "measure twice, cut once" theory, I'd transfer the wire profile to cardboard, and test-fit it before cutting the foam.
Dan Harrison 
------------------------------
 PADDLNC_at_aol.com wrote:
[snip]
> The 3M 5200 is wonderful but it has a cure 
> time of 3 days to a week for complete cure.  If you're in a hurry, try a 
> sealant called Lexel.  It has a cure time of 12-24 hours.  It's not a 
> "bomber" as the 5200, but it's a close 2nd.




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Received on Tue Feb 20 2001 - 12:05:34 PST

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