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so i plan on painting my interior and engine cover this week/end. but i was wondeing if i should use a primer or an adhesion promoter?

just lookin to our club paint experts to give advice on this one
 

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Adhesive promoter is simply adhesive promoter
its not made to make paint stick, its for 3m tapes
to help them stick to their maximum strenght.

you can use a primer if you'd like then sand it with
600, or you can just scuff the parts with 600, clean
them, and spray them. I recommend this method, but
be sure and spray some bulldog on the parts before
paint application the help paint stick better.

breakdown:
sand with 300
bulldog ( available at walmart or auto store )
prime
sand with 600
shoot it!

Best way:
scuff with 600
bulldog
shoot it!
 

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I have done all my interior pieces using adhesion promoter and Krylon Fusion paint. I did not sanding. I just made sure all the parts were clean and dry. The result was clean and easy.

 

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isnt bulldog an adhesion promoter? im pretty sure adhesion promoter is meant for the paint to "adhere" to the item...especially plastics and not using primer. worked at a custom body shop and this is what i was told. if i was you i would scuff it with 600 like was said and use the krylon fusion paint...made specifically for plastics. this paint is meant to adhere on a molecular lever...chemical bond. thats prolly what i'll do unless i need a custom color! hope all of this helps.
 

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Adhesive promoter is simply adhesive promoter
its not made to make paint stick, its for 3m tapes
to help them stick to their maximum strenght.

you can use a primer if you'd like then sand it with
600, or you can just scuff the parts with 600, clean
them, and spray them. I recommend this method, but
be sure and spray some bulldog on the parts before
paint application the help paint stick better.

breakdown:
sand with 300
bulldog ( available at walmart or auto store )
prime
sand with 600
shoot it!

Best way:
scuff with 600
bulldog
shoot it!
Bulldog IS an adhesion promoter. Never heard of it being used for 3m tapes, but it's used for paint and spray adhesives. Might work with tapes though, since they do use a type of adhesion. Something new to try I guess. Anyways, Use it....know it.....love it....it's your best friend when painting plastics. Nothing sticks to plastic too well, so you need a little extra help. Clean REALLY well with a good degreaser first. Sand with 400 grit to rough it up a bit so the primer can bite in. Primers/ paint can cover 400 grit scratches with a few coats no problem. If you're taking texture off you can sand with a lower grit (60, 100, 150 etc..etc..), but you'll wanna work you're way up to 400 grit taking the scratches out from the lower grit paper. Would suggest to primer the pieces first. It'll help the paint adhere. Might as well do it right the first time, so you won't have to go back and do it again. Can't stress the point of cleaning the piece really good. Specially if you used amoral or any other dressing on the pieces. Over time that stuff builds up and it penetrates the plastics, so clean really well before and after sanding.
 

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okay rob is confused there is an adhesion promotor for dsst and paint. 2 totally different things. bulldog is meant for paint not tape. the easiest way to prep plastic pieces is get a piece of red scotchbrite and scuff the surface you are goin to paint. clean it with grease and wax remover, and shoot the bulldog on top. wait for 15 min. and spray the paint on and clear it. its good to go. fastest, easyest, and the way its worked for years. good luck.
 

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YES!

hey Sam...just scuff it up with 400 or 600 paper...i'll be using 600. hit a couple coats of bulldog...wait 15 like was said then shoot your paint on it. when it dries hit a couple of light coats of minwax clear gloss polyurathane...unless you want a matte or semi-gloss finish, they have those also. i will be going much further with mine but this will look good for you. im gonna try to get mine full gloss like glass. we'll see haha! good luck!!!
 

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Ok I am not confused, I took things literally as they
were typed, I work at a shop and deal with this daily,
"adhesive promoter" (name of a product, its purpose to
make tape stick) its a little packet that includes a tiny
yellow sponge.

Bull dog will make paint stick to plastic, even the toughest
plastics. In a sense it is an adhesive promoter, but not what
its called.

Didn't mean to cause any confusion.
 

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Well adhesion promoter IS primer.

If you read the directions(which i did because i got bored between coats of it) it says "spray clear primer....bla bla bla"
 

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Well adhesion promoter IS primer.

If you read the directions(which i did because i got bored between coats of it) it says "spray clear primer....bla bla bla"
LOL you do that too? I usually read the can after I've used it. D'oh! :D
 

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I've used Duplicolor's Adhesion Promoter and Duplicolor's trim paint when I painted a shift knob.

Duplicolor's website describes the Adhesion promoter as ...

"Help protect against weather conditions and corrosion with Dupli-Color® Adhesion Promoter. This durable primer provides great adhesion when painting plastic, fiberglass, bumpers and aluminum trim molding.

Improve adhesion of all paints
Quick drying clear primer
Ideal for automotive plastics
Interior/exterior "
 
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