(hint #1) Being able to play whatever I want has been a central theme to my own discovering how to play guitar. I've been on that path for 37 years, and it's enabled me to uncover, test and refine a unique, skill generating learning approach.
It is important to note that urethane foam is most commonly used to refer to a material made from polyurethane. The urethane reference in this name is to the type of links, also known as carbamates, that join the units in polyurethane.
P-75 Primer. Film forming primer for use with urethane based sealant on porous surfaces. SPEC. MSDS. P-100 Primer. Fast drying general purpose sealant primer. SPEC. MSDS. P-120 Primer. Surface modifying primer for use with silicone and urethane based sealants on non-porous surfaces. SPEC. MSDS. P-150 Primer. Non yellowing film forming primer for use with urethane and silicone based sealants on porous and most non-porous surfaces. SPEC. MSDS. P-200 Primer. Two-component, film forming, epoxy based, general purpose sealant primer. SPEC