Gel Coat Mixing Chart, Dropper bottle that will yield the exact ratios referenced on this chart when mixing small amounts.

Gel Coat Mixing Chart, Fast-drying, pro-quality nail products. 5 (1⁄2 oz dropper) Mixing cup will give exact measurements for larger volumes in CC and ounce increments. The percentages in the chart: 1% thru 2%, are percentages of resin or gelcoat by weight. . 125 grams per cc. How much catalyst do I need for polyester resin? How much hardener do you add to resin? What is the mix ratio for polyester resin? MEK Calculator (mekp catalyst ratio calculator) Try it for FREE! Aug 18, 2009 · Instructions and Color Chart for Evercoat Gel Coat Repair There are two gel coat repair kits available from ITW Evercoat Match n Patch Kit (Evercoat 100668), which contains 4 oz. 0% by volume, with 1. NOTE: Notice the needle size of the orifice on the dropper tip of the dropper bottle. A common starting point for most polyester gel coats is a ratio between 1. Colour Matching Gelcoat Even if you have the manuafacturer's code to identify your gelcoat it will be very difficult to match that with new gelcoat - Your old gelcoat will have discoloured due to UV and dirt exposure, difference in gelcoat manufacturer, batch numbers and pigment supplier. cc = cubic centimeter. Mixing cup will give exact measurements for larger volumes in CC and ounce increments. Flip top and other larger orifice size lids will yield too much Catalyst. -Mix gel coat and hardener thoroughly for at least one minute. If multiple pails or drums of the same color are needed to make a part, Ashland recommends mixing all the pails or drums together in a suitable container to ensure a homogeneous mixture. Resin to hardener ratio. Accurate measurement requires precise tools, such as calibrated mixing cups, syringes, or electronic scales. oz = fluid ounce. I'll be working in very small batches, probably one ounce at a time and applying via small brush. Dec 7, 2025 · Detailed guide on calculating hardener ratios, managing temperature effects, and solving common gel coat curing issues. Select a literature category below to view documents associated with it, including service manuals, sales literature, and other materials. -It is best to work in smaller batches -Apply with a gel coat spray gun, brush or roller. Some gel coat spray guns will mix the MEKP as it is sprayed so make sure to follow the manufacturer instructions that came with the gun. 5%–2. As per frickin' usual, no indication of a mixing ratio - hardener to gelcoat. The chart is intended to guide users in properly proportioning ingredients to achieve the desired mixture. NOTE: Using drops for catalyst measurement is only an estimate. Shop nail polish, press-ons, mani kits, and nail care, 60+ new shades. Resin Catalyst Mixing Ratio. I've seen some posts that suggest 10 to 13 drops of hardener per ounce. May 22, 2024 · You can find our MEKP catalyst quantity chart HERE. Optimum application temperatures of the gelcoat, mold, and environment are 70–90 °F. In critical applications MEKP should be measured using cc’s or fluid oz’s which are volume measurements. 8% @ 77°F being ideal (about 12 drops per ounce of gelcoat). Most products need 1. The Dropper bottle that will yield the exact ratios referenced on this chart when mixing small amounts. The Gelcoat to Catalyst Ratio Calculator gives you fast, unit-safe, and reliable results every time. Nov 11, 2025 · Gelcoat requires a precise mix of MEKP catalyst to harden correctly. Polyester Resin Catalyst Chart. I ordered the gelcoat and hardener from Sherfab and it came in yesterday. The weight of MEKP 925 is 1. As per frickin' usual, no indication of a mixing ratio - hardener to gelcoat. of polyester gel paste with liquid hardener, coloring agents, cleaning solvents, mixing cup and stick and Mylar film for smoothing the repair surface. It specifies the amounts of gel coat, gel coat aid at various percentages, and MEKP catalyst to use for batches ranging from 4 to 500 ounces or 100 to 500 cubic centimeters. I'd really appreciate any of the pro's around here to chime in with an answer. If you are carrying out a repair a NEW gelcoat will never perfectly match your OLD gelcoat. The Boating Forum - Gelcoat/MEKP Mixing Ratio - I'm going to be doing some very small gelcoat repairs around the keel area. Part # PBBR-. This document provides a chart for mixing gel coat and catalyst for fiberglass resin in different batch sizes. MEKP Catalyst Quantity Chart CATALYST LARGE QUANTITY CHART CATALYST SMALL QUANTITY CHART Accurate gelcoat mixing is not optional—it determines finish quality, durability, and safety. RESOURCE LIBRARY Explore our comprehensive literature categories Access comprehensive literature and technical resources to support your needs. 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 · Gel coat manufacturers typically specify a mixing ratio of 1% to 3% MEKP by weight or volume of the gel coat. Explore Golden Artist Acrylics, known for exceptional quality, rich pigments, and versatility, offering artists the perfect tools for creative expression. 75% MEKP. Excellent “one ounce reference” for small mixtures. 30 drops is approximately equal to one cc. 25% and 1. mcnlot, m7i, cer, se6wrt, rwrsudu, tsfbzo, luv, rj, zp, lox,