SPI Regular build primer

JC Daniel

Promoted Users
Okay guys, I am not a pro by no means but I am always wanting to do great work. The long time painter near me came by last week while I was wiping down a panel with 710 wax and grease remover in preparation for primer, he said “why are you wiping the panel with wax and grease remover before primer “? I said that’s what I always do. He said that was nonsense and said you only need to wipe the panel with paper towels and blow them off with air and you are ready to prime. He said you only wax and grease before paint, well guys I need your input here so I can clear my own mind. If he does it wrong them that’s on him.
 
He is completely wrong. Every layer of product you apply during the paint process doesn't need anything like dirt, grease, oily handprints, fingerprints, people touching it with who knows what on their hands, armour all mist from the neighbors next door cleaning their car, the list goes on. Years ago a friend had a car in his garage he was working on that was in bare metal. When I visited him I could see rusty handprints where people had touched it. They got sanded off but they reappeared as people continued to touch it as work slowly progressed.
 
I bet you could change his mind about using W&G remove. All you need to do is eat a bag of Lays Potato chips, don't wash your hands. Then with your greasy potato chip hands, run over to his house. Now that you're all sweaty with greasy hands, rub your hand over one of his cars that's ready to be put in primer.
 
What's to clear your mind about? If you use WGR prior to priming you have a 100% chance of no failure from panel contaminants. My panels will have fingerprints, grease marks on them from moving them around with dirty hands, cutting oil from drilling holes, and who knows what else. Are you fine with just wiping that off with a paper towel?
 
What's to clear your mind about? If you use WGR prior to priming you have a 100% chance of no failure from panel contaminants. My panels will have fingerprints, grease marks on them from moving them around with dirty hands, cutting oil from drilling holes, and who knows what else. Are you fine with just wiping that off with a paper towel?
Don't use on filler though unless it gets a lot of flash time.
 
I always use wg on everything, I just wanted you guys to chime in so I could show him that I do what is supposed to be done.
 
primer is paint. is he saying because its primer that contamination has no effect on it? thats ludicrous. primer is just thicker so it may cover up these issues and may not make it apparent that there is contamination causing adhesion problems.
 
primer is paint. is he saying because its primer that contamination has no effect on it? thats ludicrous. primer is just thicker so it may cover up these issues and may not make it apparent that there is contamination causing adhesion problems.
He said that primer is not effected by contaminates like color and clear would be.
 
I bet you could change his mind about using W&G remove. All you need to do is eat a bag of Lays Potato chips, don't wash your hands. Then with your greasy potato chip hands, run over to his house. Now that you're all sweaty with greasy hands, rub your hand over one of his cars that's ready to be put in primer.
Sounds like a real good way to get an ass whuppin around my place.
 
That is the typical collision shop mindset JC. Total ignorance. Don't listen to those guys. You have a good understanding of what to do.

Using it on filler is perfectly OK as well. Just be prepared to allow extra time for it to flash or help it flash with your blow gun.
 
I really appreciate you guys giving me information to use, I will always continue to do as I have been instructed from the beginning. Be as clean as possible in each stage of the job.
 
I really appreciate you guys giving me information to use, I will always continue to do as I have been instructed from the beginning. Be as clean as possible in each stage of the job.
I had a paint instructor who was huge on cleanliness. He always said 'Cleanliness is Kirkliness' (because his name was Kirk) but it's one of those things I still remember to this day. And yes, we cleaned before every step, that's how we were taught. In fact the only step you wouldn't use WGR was on basecoat, and if you have to, then it should be solvent-based and not water-based.
 
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