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Author Topic:   GELCOAT RESIN to CATALYST RATIO

Waccamaw Whaler posted 02-27-2010 01:30 PM ET (US)
I have some small gel coat scratches I'm going to touch up and don't want to mix more gelcoat than necessary. I actually measured the following quantities for common items. I then calculated the mix ratios so they should be relative close estimates of the amount of catalyst to use with gelcoat at a 2% catalyst ratio. Hopefully this will be of use to others.
COMMON ITEMS <RESIN> < CATALYST >
CC 2% CC DROPS

1 - 35 MM plastic film container 34 .68 12.5
1 - Teaspoon (Measuring Cup)* 14 .28 6.0
1 - Plastic Teaspoon Spoon* 7 .14 3.0
1 - Plastic Soda Bottle cap 8 .16 3.5

The .5 DROP hung on the dropper, it did not fall.
*Note that the CC in a 'Measured Teaspoon' and 'Plastic Teaspoon' were not the same.

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