I am sure the idea had been discussed by the
PMMA manufacturers. It is in my opinion purely a marketing profit/loss situation. If these sheets were to be used for the penis ONLY, the demand is minimum compared to the demand of regular liquid
PMMA which is used by hundreds of Dr\'s and in many places in the body, so its cost is down. The
PMMA sheets cost vs profit may never have justified the cost of R&D and a another manufacturing machines and processes to be added next to the regular liquid
PMMA...me thinks
Live Long and Prosper!