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Posts: 761
11/29/2010 6:51 PM
caboose22 wrote:they do get misused a lot but basically this is what I've learned myself.poly = plasticfrom there is a crapshoot to know if 'poly' is referring to:polyurethane = the hard as rock and brittle when heated layer. This is usually the top layers that POP off when you heat gun it.polyester = the stickier sealer coat usually found underneath most Fender finishes. Its clear, but when you heat it up, it will yellow just a bit. Its also the stuff left over when you THINK you're done stripping a finish. You have to use the dull putty knives to slowly scrape it off once heated. This is where I tend to scortch bodies by getting them too hot. I usually just assume that I'll be dealing with BOTH types when people say, "its a poly fininsh."
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