Asked by: Hajjaj Gulyashko
asked in category: General Last Updated: 24th May, 2020

How much hardener do you add to polyester resin?

Ratio. The ratio range for catalyst to resin is 1 to 2 percent hardener to the total volume of resin to be used. For example, four drops of hardener will be 1 percent of 1 ounce of resin. Adding more of less of the catalyst agent will speed up or slow down the curing time for the resin.

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Also know, how much wax do I add to polyester resin?

Directions for Using Wax Additive

Amount of Gelcoat or Polyester Resin w/o Wax Quantity of Wax Additive Required
1 ounce 20 drops
16 oz. (1 pint) 1/4 ounce
32 oz. (1 quart) 1/2 ounce to 1 ounce
1 gallon 2 ounces to 4 ounces

One may also ask, how much catalyst do I need for polyester resin? A rule of thumb for polyester laminating resin is between 1% and 2% i.e. 1% for summer (to give maximum wetting time) and 2% for winter. For polyester Gelcoats used in a moulding situation, we recommend from 2% to 2.5%catalyst.

Also to know, what happens if you put too much hardener in fiberglass resin?

Adding too much of either resin or hardener will alter the chemical reaction and the mixture will not cure properly.

What is the mix ratio for polyester resin?

Ratio. The ratio range for catalyst to resin is 1 to 2 percent hardener to the total volume of resin to be used. For example, four drops of hardener will be 1 percent of 1 ounce of resin. Adding more of less of the catalyst agent will speed up or slow down the curing time for the resin.

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