How many drops of MEKP is 1 oz of gelcoat?
How many drops of MEKP is 1 oz of gelcoat?
If one CC is roughly 30 drops as stated below that would put me at roughly 18.75 drops of MEKP per ounce of gelcoat.
How much hardener is in a quart of resin?
For example, four drops of hardener will be 1 percent of 1 ounce of resin….How much hardener do you add to polyester resin?
| Amount of Gelcoat or Polyester Resin w/o Wax | Quantity of Wax Additive Required |
|---|---|
| 16 oz. (1 pint) | 1/4 ounce |
| 32 oz. (1 quart) | 1/2 ounce to 1 ounce |
How much hardener do you put in fiberglass?
Add 14 drops of liquid hardener per 1 oz. of Fiberglass Resin (or for ¼ can of Fiberglass Resin, use ¼ tube of liquid hardener).
How long does gelcoat take to harden?
Most re-sprayed gel coat will cure in 2-4 hours, although overnight cures are ideal. Begin wet sanding with the finest grit that will remove orange peel in the re-sprayed area. This will avoid unnecessary sanding scratches.
Does gelcoat have a shelf life?
Polyester resins / gelcoats generally have a shelf life of 12 – 16 months in an unopened can. Most Gel manufacturers will guarantee their resins to be stable for 3 – 6 months after purchase if still in the sealed factory container.
How much resin and hardener do I mix?
Typically, this is 1 : 1 or 2 : 1 between resin and hardener, but there are also much more complicated ones such as 100 : 45. You can usually find the details on the packaging or containers. The mixing ratio has to be very precise, otherwise the epoxy resin will not harden or it will not work optimally.
What kind of hardener do you use for gelcoat?
DIRECTIONS FOR POLYESTER HARDENER POLYESTER RESIN/GELCOAT IS CATALYZED WITH MEKP (METHYL ETHYL KETONE PEROXIDE). THE RATIO IS APPROXIMATELY ONE OUNCE OF HARDENER PER GALLON OF RESIN.
How do you remove uncured gelcoat?
How can I remove uncured gelcoat? Acetone on a rag can be used to break down the gelcoat. Use a plastic putty knife to scrape the uncured gelcoat away.
Does polyester gelcoat have a shelf life?
Polyester resins and gelcoat have a limited shelf life, and will eventually harden in the container—without the addition of catalyst. In general, the shelf life for uncatalyzed polyester resins should be up to 6 months, when stored in dry, cool conditions below 70°F.
How long does gel coat last on a boat?
Regularly waxed gelcoat can retain its gloss for 15 years or more. The real purpose of a coat of wax is to protect, but wax also has restorative properties if the gelcoat is not too badly weathered.
What happens if I add too much hardener to my resin?
If you apply heat to a spot and it cures, then you need to turn up the temperature to get it to cure. If this is not the case, too much hardener may be the issue. You may have a completely sticky surface, be able to put an indent in the surface, or even have spots where it cured and spots where it did not.
What happens if you add too much hardener to resin?
Measure ArtResin in precisely equal amounts by volume: Adding too much of either resin or hardener will alter the chemical reaction and the mixture will not cure properly.