The plug is moved outside the shop to make room. It will also be used to test surface temperatures on hot sunny days. I found that on the hottest and sunniest days, the surface temp, with dark blue paint, never exceeded 188 deg, F. This means I can paint it dark blue since the vinylester resin is good to 235 deg, F. Epoxy is good to 180 deg, F. These numbers are for room temp, hand lay-ups with out an elevated temp post cure.

Previous Closeup

Next Closeup