Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Basecoat Did Not Adhere
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Old 09-26-2012, 07:08 PM
69 widetrack 69 widetrack is offline
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Exactly... the rules still apply...the solvents are trapped, very often the easiest product to be abused is the primmer, because, it pours thick and can be applied thick. the primmer will flash over and feel dry, you can let it sit for months and it is not cured through, when you top coat it the solvents will go right through the primmer down to bare metal and bounce out again trying to release itself. when it hits the catalysed clear coat it can take everything with it. This is also why many paint jobs sink and show sand scratches. The movement of solvents down to the metal and coming out is a design commonly known as "chemical adhession". 50% percent of the adhession mechanics of automotive paint, the 50% percent is mechanical, sanding.
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