07-29-2015, 09:44 PM
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#31
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Quote:
Originally Posted by Unner
If you can I would recommend powdercoat. When I painted my grille I used SEM bumper coater which is supposed to be one of the best but the paint is getting worn off kinda by the bug hits on the front already. I will probably pull the grille at some point and have it painted at a body shop that can hit it with a good clear coat afterwards too. The front is going to see the most issues with paint because of bugs, stones, etc at 70 mph on the interstate. You could look for an industrial powdercoat place. That's where my sliders are right now, they just put mine in with a bunch of other semi gloss black stuff and only charged $40 because of that.
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I could, it would cost me around $300 up here in N.NJ/NY. I cant justify paying that when Shrockworks would have done it for $100. I already bought the primer, paint & clear coat.
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'99 4Runner - 2.7L 3RZ, 5 Speed, 4.56 Gears - Lifted, Locked & Loaded - 166k Original owner - http://www.toyota-4runner.org/3rd-ge...ld-thread.html
'99 Limited - E-Locker- Stock (for now) - 233k 2nd Owner http://www.toyota-4runner.org/3rd-ge...ted-build.html
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07-30-2015, 10:22 PM
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#32
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So I was doing some research & read that you are not supposed to add color over self-etching primer. You need to seal it with a regular primer before spraying color. Never heard that before. This was at a car restoration web site during a Google search.
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'99 4Runner - 2.7L 3RZ, 5 Speed, 4.56 Gears - Lifted, Locked & Loaded - 166k Original owner - http://www.toyota-4runner.org/3rd-ge...ld-thread.html
'99 Limited - E-Locker- Stock (for now) - 233k 2nd Owner http://www.toyota-4runner.org/3rd-ge...ted-build.html
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07-30-2015, 11:29 PM
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#33
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And what reason did they give for that? Link?
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07-31-2015, 12:10 AM
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#34
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Quote:
Originally Posted by Scramble
So I was doing some research & read that you are not supposed to add color over self-etching primer. You need to seal it with a regular primer before spraying color. Never heard that before. This was at a car restoration web site during a Google search.
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I've done it both ways, came out just as strong and looked just as good either way, never heard of that but sounds like bs to me.
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'97 3RZ 5 Speed "FrankenRunner" ( Build Thread) - Dormant
The "shitmobile" 500$ 3RZ Auto 4Runner - ( Saved from the Scrapyard: Resurrecting a 500$ 3rd Gen
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07-31-2015, 12:55 AM
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#35
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Quote:
Originally Posted by UnderFire
I've done it both ways, came out just as strong and looked just as good either way, never heard of that but sounds like bs to me.
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Quote:
Originally Posted by csp
And what reason did they give for that? Link?
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It was a search I did at work. They said that self-etching primer is only to be used on bare metal (obviously) & you're only supposed to use 1 or 2 light coats. It's only purpose is for adhesion & is not to be sanded. It's transparent & will effect the top coat color. A few coats of regular primer should be used to seal it with sanding in between coats to provide a nice smooth opaque base for the top coat.
They were talking about high end paint jobs on restored cars & it makes sense to me especially if you are talking about lighter colors.
I'm in the printing business & different color substrates will provide different results with the same image & the same inks. I don't know if this matter's with a Black bumper but I'm gonna do it.
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'99 4Runner - 2.7L 3RZ, 5 Speed, 4.56 Gears - Lifted, Locked & Loaded - 166k Original owner - http://www.toyota-4runner.org/3rd-ge...ld-thread.html
'99 Limited - E-Locker- Stock (for now) - 233k 2nd Owner http://www.toyota-4runner.org/3rd-ge...ted-build.html
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07-31-2015, 02:50 AM
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#36
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Quote:
Originally Posted by Scramble
It was a search I did at work. They said that self-etching primer is only to be used on bare metal (obviously) & you're only supposed to use 1 or 2 light coats. It's only purpose is for adhesion & is not to be sanded. It's transparent & will effect the top coat color. A few coats of regular primer should be used to seal it with sanding in between coats to provide a nice smooth opaque base for the top coat.
They were talking about high end paint jobs on restored cars & it makes sense to me especially if you are talking about lighter colors.
I'm in the printing business & different color substrates will provide different results with the same image & the same inks. I don't know if this matter's with a Black bumper but I'm gonna do it.
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Ok, that's definitely a concern when you're working with colors or especially white, you always want to have a neutral base coat so it doesn't show through the paint, with black, not so much. The times I've covered self etching or iron oxide primer with a top coat of 2-3 coats of automotive primer were times that I was going for a smoother finish, it's much easier to get a nice clean, smooth finish with a sand-able primer, with a self etching primer, there's nothing to sand, so if you spray your black over it, you pretty much get any imperfections that were in the surface, not really a concern on bumper, skids etc. for me, but some people like to get the best finish possible on everything.
If you're looking for a quick way to knock out imperfections, dirt, bugs, etc between your coats, look for 3M "between coats" pads, I've used them to get specs of stuff off of paint jobs in progress with great results, and as long as the primer your using builds up enough it'll completely hide the spot where it used to be.
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'97 3RZ 5 Speed "FrankenRunner" ( Build Thread) - Dormant
The "shitmobile" 500$ 3RZ Auto 4Runner - ( Saved from the Scrapyard: Resurrecting a 500$ 3rd Gen
02 Tacoma Double Cab, mid-travel, locked, armored, supercharged and riced. (Longbed and 5 speed in the works)
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07-31-2015, 11:07 AM
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#37
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Quote:
Originally Posted by Scramble
So I was doing some research & read that you are not supposed to add color over self-etching primer. You need to seal it with a regular primer before spraying color. Never heard that before. This was at a car restoration web site during a Google search.
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That is what I did on my rims first time. Decided it was too much work. Now I just use primer/paint in one can, works great.
Just to remember, your before prep work is so important, it makes all the difference, get all those oils and minerals off the bare metal.
The more coats the better and make sure paint never dries between coats, just 15 min to tacky.
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07-31-2015, 02:26 PM
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#38
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I got my rear bumper and sliders powder coated.
What I learned: Pick a good powder coating shop… My sliders have been fine but on the rear bumper, they did such a shitty job prepping the metal that its flaking off on the corners and they missed tons of spots on the inside of the bumper and its starting to rust lightly. It was surprisingly cheap and now I see why they don't charge more. Lesson learned.
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07-31-2015, 08:15 PM
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#40
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Quote:
Originally Posted by Scramble
It was a search I did at work. They said that self-etching primer is only to be used on bare metal (obviously) & you're only supposed to use 1 or 2 light coats. It's only purpose is for adhesion & is not to be sanded.
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You can sand self-etching primer. That bit about sanding means that in auto body work terms it's not a high-fill type primer meant for filling imperfections and block sanded. That's not the process you're going to go through painting a bumper. I sanded my etching primer with no problems or sand through back to bare metal.
Quote:
It's transparent & will effect the top coat color. A few coats of regular primer should be used to seal it with sanding in between coats to provide a nice smooth opaque base for the top coat.
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The stuff in a spray bomb can, like Duplicolor, is not transparent. If it were you'd see the metal through it. ANY primer can affect the color of the top coat of lighter to medium colors. Not so much with black.
No harm adding another type of high build filler, but it really serves no purpose in this application.
Personally I don't use self-etching primer on body work. Epoxys do a MUCH better job and actually seal the metal against moisture. Self-etching and high build primers are permeable and need to be top coated as soon as possible. I can get a panel prepped for primer, spray it with epoxy primer and forget about it for any length of time.
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08-18-2015, 02:23 AM
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#41
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My bumper came out nice, we'll see how it hold up to rock chips. Getting the surface rust off the inside of the bumper was a real pain as was getting the primer/paint into all of those nooks & crannies.
Surface rust:
Wire wheels, Dremel & 80 grit on the angle grinder polished it up nice.
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'99 4Runner - 2.7L 3RZ, 5 Speed, 4.56 Gears - Lifted, Locked & Loaded - 166k Original owner - http://www.toyota-4runner.org/3rd-ge...ld-thread.html
'99 Limited - E-Locker- Stock (for now) - 233k 2nd Owner http://www.toyota-4runner.org/3rd-ge...ted-build.html
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08-18-2015, 02:38 AM
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#42
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2 thin coats of self etching primer:
3 coats of primer, sanding the last coat with 320 grit.
This pic has about 3 thin coats of Black, I ended up doing 6 thin coats.
I sanded the Black with 600 grit before adding the last coat. It's real smooth & looks professionally done.
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'99 4Runner - 2.7L 3RZ, 5 Speed, 4.56 Gears - Lifted, Locked & Loaded - 166k Original owner - http://www.toyota-4runner.org/3rd-ge...ld-thread.html
'99 Limited - E-Locker- Stock (for now) - 233k 2nd Owner http://www.toyota-4runner.org/3rd-ge...ted-build.html
Last edited by Scramble; 08-18-2015 at 02:46 AM.
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11-27-2021, 03:54 PM
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#44
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Did you end up going with the semi-gloss or flat black?
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