Tim,

If you are useing RAKA 127 with 350 slow non-blush hardener, you can put the fiberglass on as soon as it's tack free. If you can get your shop to 80 deg and let it fall to 65 deg but not get colder than 60-65 deg, you should only use the 350 slow and forget the 610 fast.

If you are useing the 127 Resin with 606 AND 610 you should wash first as RAKA's web site says "Our two to one mix ratio slow and fast hardeners are easy to use, are low blushing and can be mixed together to
customize working characteristics and cure times." Anytime you have blushing, you want that off the surface before the next coat.

Also, if you are putting on the next coat under 72 hours, there is no need to sand, just wash with water.

Are the out-gassing air bubbles on top of the surface or are they just small bubbles in the previous coat? If you do have bubbles on top of the surface, wash first to remove the blush, then you can sand lightly with 150-220 to remove the bubbles.

Generally, you want to put the next epoxy coat or fiberglass with epoxy on as soon as the last coat is tack free. There are different times with different epoxies, but I used RAKA 127/350 NON-blush on the last boat and it was tack free at 70 deg in about 6 hours.

Brad

: So I epoxied a sealer coat last night (Thursday night). I finished around
: 10:30.
: I want to do the fiberglass this weekend. I'm using Raka epoxy with the 1/2
: fast and 1/2 slow hardener. I am wondering if tonight would still fit in
: the window of "Uncured", around 22 hours out. Or if I should
: wait and sand and wash on Saturday AM around 36 hours... I would like to
: do it tonight as it is easier to get the garage to cool after heating it
: up if it isn't 80 degrees outside...

: Also, after the sealer coat, I tipped off the epoxy and I know I hit every
: square inch... How long should you wait to start the tipping? I did the
: heat the garage, let it cool thing to try to eliminate air rising out of
: the wood. I rolled the epoxy on and tried to go as slow as I could to help
: keep the little bubbles away.

: This morning there were several bubbles that were obvious now that the epoxy
: is nearly hard.. What are my options? If I get the bubbles open to the
: surface, are they likely to fill during the next coat or do I need to sand
: them out?

: Thanks in advance.. Tim