Quick primer question.
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Mountain Pass
Joined: May 2012
Posts: 100
Likes: 0
From: South of Butler PA
Quick primer question.
So heres the deal, A buddy is letting me use his paint booth when I'm ready for paint. I don't want to hold up his shop doing all the prep work there, so would it be advisable to shoot primer outside at my place? Would too much dust and crap get into the primer and cause problems with the paint? (I will wet-sand to smooth out the surface, so its more the question of will contaminants get under the primer and cause bad adhesion.) I'm new to the world of autobody so I apologize if it's hard to understand what I mean.
I'm trying to achieve a nice, but not perfect paint job. Thanks
I'm trying to achieve a nice, but not perfect paint job. Thanks
Cargo Master
Joined: Jul 2006
Posts: 3,014
Likes: 91
From: Concord, CA
Do you have the ability to paint under a overhead of some sort? Is there also a quiet time during the day for wind? I am currently painting a car after sanding the original paint well and doing ding repair. I will be spraying my 2K high build primer out in the open when there is no breeze around 9:00 am. Three coats go onto the car and with the temps in the 80's flash time, tack time, dust free and pot life time are greatly reduced. I expect very little to start and the sanding of 1 layer off should clear anything. The car then goes into a backyard booth for the color coat after I put it up.
Postmaster
Joined: Apr 2000
Posts: 2,881
Likes: 1
From: North of Tulsa, Oklahoma
Sure it's possible to spray the primer and then get yer truck to your buddy's booth for the color coat. I am painting my '78 f150 in sections in my driveway/garage/under my pop up canopy. Some things to think about: When painting outdoors the slightest wind can easily carry bugs, grass, etc across the fresh primer. Put up some wind blocking tarps if you can. I have put clear bisquine on three sides of my popup canopy to keep the wind and dust at bay. It worked great for me. Also, some primers say you have to wait so many minutes before applying the color coat. Then if you surpass that few minute window you will have to let it cure for a few hours. Then you will have to sand and wipe the primer down real well to get the proper adhesion for the topcoat. If you primer your truck and plan to drive it to the booth you risk road rock chips, road tar, dust, bug guts, etc. You will have to clean the primer coat again in the booth before putting the top coat on. Best of luck. Show us pics when your done. 
Cargo Master
Joined: Jul 2006
Posts: 3,014
Likes: 91
From: Concord, CA
True as there are two kinds of primer. Epoxy primer usually has a window in which you must topcoat. I use PPG and so I need to wait 90 minutes after two coats before topcoating and must do it before 7 days. On the other hand a primer surfacer has no window. You lay down 3-5 coats and start your block sanding to get the panel straight. Once that is done you can color coat anytime as you have the surface already sanded. Just clean off, tack off and paint.
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