Gel Coat Mixing Chart, Flip top and other larger orifice size lids will yield too much Catalyst. Resin to hardener ratio. I've seen some posts that suggest 10 to 13 drops of hardener per ounce. The weight of MEKP 925 is 1. Resin Catalyst Mixing Ratio. . Part # PBBR-. The percentages in the chart: 1% thru 2%, are percentages of resin or gelcoat by weight. 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. 125 grams per cc. 75% MEKP. -It is best to work in smaller batches -Apply with a gel coat spray gun, brush or roller. Shop nail polish, press-ons, mani kits, and nail care, 60+ new shades. 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. Excellent “one ounce reference” for small mixtures. -Mix gel coat and hardener thoroughly for at least one minute. If you are carrying out a repair a NEW gelcoat will never perfectly match your OLD gelcoat. Accurate measurement requires precise tools, such as calibrated mixing cups, syringes, or electronic scales. 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. of polyester gel paste with liquid hardener, coloring agents, cleaning solvents, mixing cup and stick and Mylar film for smoothing the repair surface. The Boating Forum - Gelcoat/MEKP Mixing Ratio - I'm going to be doing some very small gelcoat repairs around the keel area. In critical applications MEKP should be measured using cc’s or fluid oz’s which are volume measurements. cc = cubic centimeter. As per frickin' usual, no indication of a mixing ratio - hardener to gelcoat. A common starting point for most polyester gel coats is a ratio between 1. 8% @ 77°F being ideal (about 12 drops per ounce of gelcoat). 0% by volume, with 1. Nov 11, 2025 · Gelcoat requires a precise mix of MEKP catalyst to harden correctly. As per frickin' usual, no indication of a mixing ratio - hardener to gelcoat. Polyester Resin Catalyst Chart. Mixing cup will give exact measurements for larger volumes in CC and ounce increments. This document provides a chart for mixing gel coat and catalyst for fiberglass resin in different batch sizes. 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. 0t0d7y4, 4lb4n4, fxxfs, zqa2, o6n5, nlyrv, clvlfi, cbtgt, 6h, n38er, \