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#1
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A week seems about right, especially if the local temperature is above
about 60 deg F (though I have no personal experience with the epoxy you're using). Be *sure* to wash the cured epoxy surface to remove the amine blush before you proceed to the next step, which will likely include sanding the surface (*after* you've washed it) with something like 150 grit paper. MW |
#2
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On Fri, 20 May 2005 14:14:11 -0700, mike.e.worrall wrote:
A week seems about right, especially if the local temperature is above about 60 deg F (though I have no personal experience with the epoxy you're using). It has been rather cold here lately, freezing in the night :-( I hope for some sun in the weekend, then I can drag the boat out in the sun to speed up the process. I'll call SP (or Diab which sells it here in Norway) on monday. Be *sure* to wash the cured epoxy surface to remove the amine blush before you proceed to the next step, which will likely include sanding the surface (*after* you've washed it) with something like 150 grit paper. Yes, I intend to wash it properly before sanding. After sanding I am going to clean it with Acetone before I apply the primer. I plan to use a two part Epoxy primer from Jotun. (www.jotun.no). According to their information I can apply anti fouling bottom paint on the primer after 10-12 hours and before 3 - 7 days, depending on the temperature. -- Oddgeir I am building a boat: http://www.oddgeirkvien.com/baat |
#3
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Yes, I intend to wash it properly before sanding. After sanding I am going to clean it with Acetone before I apply the primer. I plan to use a two part Epoxy primer from Jotun. (www.jotun.no). According to their information I can apply anti fouling bottom paint on the primer after 10-12 hours and before 3 - 7 days, depending on the temperature. ---- epoxies take upwards of a week to cure completely so in theory the best time to recoat or coat with anything, is within that week, ideally as soon as the epoxy is hard enough to handle the abuse of applying something on top of it. That way there is a chemical bonding between the layers besides the regular mechanical bond. paul oman progressive epoxy polymers -- |
#4
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I've heard tell that acetone from the orange box (and other affordable
suppliers) is reclaimed and may contain impurities that will do bad things to the epoxy. Maybe just water to get rid of the amine blush? Roger http://home.earthlink.net/~derbyrm Yes, I intend to wash it properly before sanding. After sanding I am going to clean it with Acetone before I apply the primer. I plan to use a two part Epoxy primer from Jotun. (www.jotun.no). According to their information I can apply anti fouling bottom paint on the primer after 10-12 hours and before 3 - 7 days, depending on the temperature. |
#5
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I do beleive you heard incorrectly. The H.D.'s here in So. Calif sell
Klean-Strip acetone (product code GAC18). It has not been reclaimed (and at nearly $13 / gallon, it %$#@ well better not be!). I tried a batch of reclaimed acetone once (bought from the local wholsale glass/resin supplier) and you could tell *immediately* that this was 'different' - it felt sticky. The Klean-Strip does *not* exhibit this obvious symptom. MW |
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