Gelcoat Mixing Calculator, The correct mix ratio is critical to ensure proper curing, strength, and finish quality.

Gelcoat Mixing Calculator, 5% MEKP (about 2 oz per gallon of resin). Excellent “one ounce reference” for small mixtures. CATALYST LARGE QUANTITY CHART Catalyst Concentration Resin Quantity Quart Gallon 5 Gallon 1/2% 1/16 oz 2/3 oz 3 1/3 oz 3/4% 1/4 oz 1 oz 5 oz 1% 1/3 oz 1 1/3 oz 6 2/3 oz 1 1/2% 1/2 oz 2 oz 10 oz CATALYST SMALL QUANTITY CHART CatalystConcentration Resin Quantity30 drops = 1 cc 2 oz 4 oz 8 oz 12 oz 16 oz 1/2 % 9 drops 18 Dec 7, 2025 · Detailed guide on calculating hardener ratios, managing temperature effects, and solving common gel coat curing issues. Below are two free mekp calculators and a mekp chart. THE RATIO IS APPROXIMATELY ONE OUNCE OF HARDENER PER GALLON OF RESIN. Most gelcoat manufacturers recommend catalyst percentages between 1% and 2% by weight. Standard mix: 1. We are offering these as an aid to help determine the right size of gelcoat, high gloss addtive, and MEKP to purchase. USE THE FOLLOWING RATIOS FOR SMALLER AMOUNTS. Enter how much resin you are mixing and your shop temperature, and the calculator gives you the dose in cc and fluid ounces, adjusted for the weather, so your batch gels on time and cures hard. oj0, w5mgr, e0, lmjuca, 3kcenoq, ytux3z, bbhcpp, po, 4sq, yq7qm,