Gel Coat Mixing Chart, I'll be working in very small batches, probably one ounce at a time and applying via small brush. Mixing cup will give exact measurements for larger volumes in CC and ounce increments. As per frickin' usual, no indication of a mixing ratio - hardener to gelcoat. Ensure proper curing with ChemCalc's free MEKP calculator. 8% @ 77°F being ideal (about 12 drops per ounce of gelcoat). Features Duratec override and custom percentage options. Flip top and other larger orifice size lids will yield too much Catalyst. . 5%–2. NOTE: Notice the needle size of the orifice on the dropper tip of the dropper bottle. m6sgurj, mbhf, 76vw7, vqxz, oex, qtshjpen, fngqzm, xf, lyiub, jw,