(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.
1 Take a damp, not wet, clean lint free paper towel and wipe the area of any debris and dust created by the abrasion. 2  Allow the area to dry thoroughly. 3  Primer the area with a thick coating of pinchweld/metal primer and overlap onto any existing urethane by 1/8 to 1/4 inch.