This 2.125-inch tall foam block exhibited clean cuts after being laser cut at a speed of 20 inches per minute. A 7.5-inch plano convex lens directed the 240W beam through the high-density foam. Spot size was 0.012, and depth of focus was only 0.54. Nitrogen at 30-PSI provided the gas assist.
Synrad lasers produced smooth edges on this foam block.