MEKP Catalyst Calculator & Mixing Guide (oz, mL, cc) MEKP Catalyst (Methyl Ethyl Ketone Peroxide) is used to cure polyester resin, vinyl ester resin, and gelcoat. The correct mix ratio is critical to ensure proper curing, strength, and finish quality. Standard mix: 1.5% MEKP (about 2 oz per gallon of resin). Important Mixing Notes This information is based on MEKP 925 and tested at 77°F (25°C) . These are estimates and may vary depending on the resin system, shop conditions, and ap...
MEKP Catalyst Calculator Calculate exactly how much MEKP catalyst you need for polyester resin, vinyl ester, or gelcoat. Input Resin Amount (oz) MEKP % 1% 1.5% (Standard) 2% Standard mix is 1.5% at ~70–75°F. Adjust as needed. Result 0.24 oz 7.1 mL / cc Quick Tip: Perfect for small batches and repairs. Quick Mix Examples 8 oz Resin ~3.5 mL (0.12 oz)...
Polyester Resin Guide: How to Use It, Types, and What You Need Short Answer Polyester resin is the most widely used material for fiberglass repair, boat building, and composite construction. It is affordable, fast-curing, and ideal for laminating fiberglass cloth, mat, and structural parts. --- What is Polyester Resin? Polyester resin is a thermosetting resin used in fiberglass applications to create strong, durable composite structures. It is activated using MEKP catalyst and cures throug...
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