Tips & Tricks

Benefits of Core Materials
The use of core materials can be very advantageous. When core material is used to double the thickness of a structure, the relative stiffness increases 7 times. The strength increases 3.5 times while the weight only increases 1.03 times. When core material quadruples the thickness, the relative stiffness increases an incredible 37 times, the strength increases 9.2 times, but the weight only increases a mere 1.06 times.

Polyester Resin Catalysis
Polyester resins should be catalyzed at 1-2% MEKP. 10 cc / 1 quart = 1%.