Composite Classroom
A good rule of thumb when mixing the epoxy/hardener is to use one part epoxy to one part carbon cloth, by weight. We didn’t have an accurate scale around the shop, but fortunately there’s an approximation that makes measuring easier: 1 fluid ounce (volume) of epoxy weighs about 1 ounce. We bought a few disposable graduated measuring cups from U.S. Composites, so it was easy to measure the epoxy in fluid ounces. The carbon cloth we purchased was 5.7 ounces (weight) per square yard. We cut a 10x10-inch piece of carbon, and although we didn’t have a scale, we were able to calculate its weight by knowing a square yard of this material weighed 5.7 ounces. View Related Article
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