A: Nope. Directions for Use Use hardener with Bondo Fiberglass Resin. How to Paint Over Water-Damaged Wood. The more paint there is on the car, the more fragile that paint is. I'm about to brush paint my LHR door inside (it's different to the cars colour as it was a replacement door) and I have a tin of unmixed 2k left with the colour of my car when it was resprayed. Think about it like this: the thicker the paint layers are, the more “give” there is to the surface. You would wait a couple years and go to spray more acrylic enamel on it and it in most cases will lift like you applied paint … The instructions will specify the recommended time period required for curing -- with or without a hardener or activator. On their own, epoxy resins are very stable fluids with relatively long shelf lives. I found with this paint that it would take forever to dry without the hardener. Once mixed, the fiberglass resin will cure in 2 hours. STEP 6 Spraying the truck: So once the paint is prepped and ready to lay down, hook up your paintgun and pour some paint in, make sure you use a paint strainer so that any big particles get caught. If applied onto a floor without the hardener, the resin would remain a near liquid indefinitely and could not transform into a durable flooring system. Urethane single stage paint is more durable, and it cures quicker than acrylic enamel paint. There’s a reason car manufacturer’s only use a few coats of paint. Given enough time, the paint will harden without the hardener. Will epoxy dry without hardener? Is there anything I can put on it at this stage, like maybe a coat of shellac, to solve this problem? Heat is the major cause of Epoxy hardening. The finish looks good but is still a little soft, but it is dry. Adding too much or too little hardener will alter recommended curing periods, and the incorrect quantity of thinner can result in runs, sags or dry patches in paintwork. What you're talking about is Epoxy paint, the answer is yes. THE HARDENER MUST BE ADDED TO THE BASE AND NOT THE REVERSE. There are few things worse than having finished a large project using fiberglass, only to not have it fully cure. Will acrylic enamel paint dry without hardener? Step 1 Wipe out the paint mixing pot with a clean piece of cloth to remove traces of dust and other foreign contaminants. Today, the paint surface is soft, and articles left on top will stick to it. ADD THE HARDENER (ACTIVATOR) TO THE BASE SLOWLY UNDER SLOW AGITATION. I didn’t think I really needed the hardener since the acrylic dries in a few hours but I didn’t realize it doesn’t get hard until it cures, which can take a long time. Acrylic enamel with no hardener never does fully cure to where you can safely spray more acrylic enamel on top of it. It is only when mixed with an epoxy hardener that they can cure properly. Chances are you did not add enough catalyst, the chemical that hardens the resin. The paint store man said latex paint never gets really hard. Also Know, will Bondo hardener work with fiberglass resin? You let it sit, and sit, and sit, but it never completely hardens. Paint – even when it’s hardened – is not as hard as metal. Hard drying latex enamel paints are available, which make kitchen table clean-ups easier. If applied onto a floor without the hardener, the resin would remain a near liquid indefinitely and could not transform into a durable flooring system. ADDITION OF THE BASE TO THE HARDENER CAN CAUSE THE FLOCCULATION OF THE PIGMENT. I was penny-wise and pound foolish and sprayed acrylic enamel a few days ago without hardener. Also, be sure to read the instructions listed on your acrylic enamel paint. Exterior wood elements become vulnerable to water damage as soon as the paint or other protective finish starts to fail. This is not true. Own, epoxy resins are very stable fluids with relatively long shelf lives it never hardens. 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