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millerje78
Samba Amishman
Joined: October 16, 2005
Posts: 2445
Location: Holmes County, Ohio
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 Posted: Mon Jan 25, 2010 7:18 pm Post subject: painting bumpers |
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hey body/paint folks,
I am re-doing a 73 sedan, and I have a question about the bumpers:
They are in fine shape structually, but the chrome is hurting pretty bad. Can I blast the chrome off and paint it like a body panel, or is there some special process used for painting bumpers?
thanks.
_________________
always seeking a better way
my 73 standard project
do your research, consult with experts, and buy quality parts. you won't be sorry |
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upsfella
Samba Member
Joined: July 28, 2008
Posts: 55
Location: Ft. Lewis WA
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| Posted: Tue Jan 26, 2010 2:06 am Post subject: |
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you could attemp to DA it with 38grit, rough it up, move to 60, then 80 until move of the imperfections are out then coat it with etching primer to prevent rust, then high build primer, block it down, seal it and paint it.
or sand blast it, etching primer, highbuild, block it, seal it and paint it
both of those options will yeild you a high quality finish if you take your time and do it right.. |
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Joel
Samba Member
Joined: September 04, 2006
Posts: 11099
Location: NSW Australia
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| Posted: Tue Jan 26, 2010 3:19 am Post subject: |
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i painted mine years ago doing the same thing
just scuffed them up good with a wire brush fitting in the angle grinder, etch primed, high build then top coat
my back one had a bit of rust starting on the top, the wire wheel took that off and high build helped fill any imperfections
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Quick little bug, you got a Porsche motor in that?
1974 Germanlook 1303 2.5 Suba-Beetle |
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millerje78
Samba Amishman
Joined: October 16, 2005
Posts: 2445
Location: Holmes County, Ohio
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| Posted: Tue Jan 26, 2010 1:54 pm Post subject: |
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thanks for the instructions, fellas. I appreciate it. 
_________________
always seeking a better way
my 73 standard project
do your research, consult with experts, and buy quality parts. you won't be sorry |
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AhnwS71
Samba Member
Joined: January 31, 2018
Posts: 215
Location: Huntsville, AL
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| Posted: Wed Dec 30, 2020 12:15 pm Post subject: |
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| upsfella wrote: |
you could attempt to DA it with 38grit, rough it up, move to 60, then 80 until move of the imperfections are out then coat it with etching primer to prevent rust, then high build primer, block it down, seal it and paint it.
or sand blast it, etching primer, high build, block it, seal it and paint it
both of those options will yield you a high quality finish if you take your time and do it right.. |
So i am preparing to paint my bumpers. They are covered with paint i assume is factory. I was planning on stripping the rust and paint on the inside and parts on the outside with a wire wheel. Is this OK?
Also I was going to use Rustoleum brand rattle cans for the job.
1. etching primer https://www.rustoleum.com/product-catalog/consumer-brands/auto/primers/self-etching-primer
2. high build primer https://www.rustoleum.com/product-catalog/consumer-brands/auto/primers/filler-primer-spray)
3. block with what grit sand paper recommend?
4. would sealer like this be ok? (https://www.rustoleum.com/product-catalog/consumer-brands/auto/primers/primer-sealer)
5. top coat canvas white https://www.rustoleum.com/product-catalog/consumer...+Turquoise
ultimately asking if the primer/sealer/paint choices are ok and which grit sand paper is best for blocking down filler?
thank you for your input.
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'71 Westy
Sometimes you eat the bar, and sometimes the bar eats you. the Stranger |
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 80475
Location: Sneaking up behind you
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| Posted: Wed Dec 30, 2020 12:53 pm Post subject: Re: painting bumpers |
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Chrome paint????
Link
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare
עַם יִשְׂרָאֵל חַי |
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infiniteLoop
Samba Member
Joined: October 09, 2020
Posts: 265
Location: Empire State
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| Posted: Wed Dec 30, 2020 1:26 pm Post subject: Re: painting bumpers |
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| If you are not going to use a 2 part paint with hardener, I think skin coating them with filler would be better for the voids. |
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AhnwS71
Samba Member
Joined: January 31, 2018
Posts: 215
Location: Huntsville, AL
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| Posted: Wed Dec 30, 2020 7:29 pm Post subject: Re: painting bumpers |
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| infiniteLoop wrote: |
| If you are not going to use a 2 part paint with hardener, I think skin coating them with filler would be better for the voids. |
This is above my pay grade. Just a beginner diyer with no painting equipment or experience. Not trying to put together a show winner. Just trying to clean them up and stop some surface rust.
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'71 Westy
Sometimes you eat the bar, and sometimes the bar eats you. the Stranger |
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 80475
Location: Sneaking up behind you
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| Posted: Wed Dec 30, 2020 7:33 pm Post subject: Re: painting bumpers |
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i painted the back of my chrome bumpers with POR15
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare
עַם יִשְׂרָאֵל חַי |
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infiniteLoop
Samba Member
Joined: October 09, 2020
Posts: 265
Location: Empire State
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| Posted: Thu Dec 31, 2020 10:14 am Post subject: Re: painting bumpers |
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Wow Glenn. That's a phenomenal product!  |
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 80475
Location: Sneaking up behind you
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| Posted: Thu Dec 31, 2020 11:02 am Post subject: Re: painting bumpers |
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Most chrome bumpers rust from the back.
_________________
Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare
עַם יִשְׂרָאֵל חַי |
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infiniteLoop
Samba Member
Joined: October 09, 2020
Posts: 265
Location: Empire State
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| Posted: Thu Dec 31, 2020 11:18 am Post subject: Re: painting bumpers |
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| I wonder if EasyChrome is what is used to put a chrome looking surface on plastic? |
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AhnwS71
Samba Member
Joined: January 31, 2018
Posts: 215
Location: Huntsville, AL
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| Posted: Tue Jan 05, 2021 3:54 pm Post subject: |
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| AhnwS71 wrote: |
| upsfella wrote: |
you could attempt to DA it with 38grit, rough it up, move to 60, then 80 until move of the imperfections are out then coat it with etching primer to prevent rust, then high build primer, block it down, seal it and paint it.
or sand blast it, etching primer, high build, block it, seal it and paint it
both of those options will yield you a high quality finish if you take your time and do it right.. |
So i am preparing to paint my bumpers. They are covered with paint i assume is factory. I was planning on stripping the rust and paint on the inside and parts on the outside with a wire wheel. Is this OK?
Also I was going to use Rustoleum brand rattle cans for the job.
1. etching primer https://www.rustoleum.com/product-catalog/consumer-brands/auto/primers/self-etching-primer
2. high build primer https://www.rustoleum.com/product-catalog/consumer-brands/auto/primers/filler-primer-spray)
3. block with what grit sand paper recommend?
4. would sealer like this be ok? (https://www.rustoleum.com/product-catalog/consumer-brands/auto/primers/primer-sealer)
5. top coat canvas white https://www.rustoleum.com/product-catalog/consumer...+Turquoise
ultimately asking if the primer/sealer/paint choices are ok and which grit sand paper is best for blocking down filler?
thank you for your input. |
i forgot to say that my bumpers are not chrome but are Pastel white LD90 on a 71.
I already removed all paint down to bare metal, applied Krud Kutter rust remover, sanded with 400 grit like the directions on the self etching primer said to, and put on 3 coats of self etching primer.
Next warm clear day i will go to the high build primer. any objections to this process?
_________________
'71 Westy
Sometimes you eat the bar, and sometimes the bar eats you. the Stranger |
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AhnwS71
Samba Member
Joined: January 31, 2018
Posts: 215
Location: Huntsville, AL
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| Posted: Tue Feb 02, 2021 11:59 am Post subject: |
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| AhnwS71 wrote: |
| AhnwS71 wrote: |
| upsfella wrote: |
you could attempt to DA it with 38grit, rough it up, move to 60, then 80 until move of the imperfections are out then coat it with etching primer to prevent rust, then high build primer, block it down, seal it and paint it.
or sand blast it, etching primer, high build, block it, seal it and paint it
both of those options will yield you a high quality finish if you take your time and do it right.. |
So i am preparing to paint my bumpers. They are covered with paint i assume is factory. I was planning on stripping the rust and paint on the inside and parts on the outside with a wire wheel. Is this OK?
Also I was going to use Rustoleum brand rattle cans for the job.
1. etching primer https://www.rustoleum.com/product-catalog/consumer-brands/auto/primers/self-etching-primer
2. high build primer https://www.rustoleum.com/product-catalog/consumer-brands/auto/primers/filler-primer-spray)
3. block with what grit sand paper recommend?
4. would sealer like this be ok? (https://www.rustoleum.com/product-catalog/consumer-brands/auto/primers/primer-sealer)
5. top coat canvas white https://www.rustoleum.com/product-catalog/consumer...+Turquoise
ultimately asking if the primer/sealer/paint choices are ok and which grit sand paper is best for blocking down filler?
thank you for your input. |
i forgot to say that my bumpers are not chrome but are Pastel white LD90 on a 71.
I already removed all paint down to bare metal, applied Krud Kutter rust remover, sanded with 400 grit like the directions on the self etching primer said to, and put on 3 coats of self etching primer.
Next warm clear day i will go to the high build primer. any objections to this process? |
Just curious, does primer seal the moisture and air out to prevent rust? How come you have to use a sealer? shouldn't the sealer be applied after the paint?
Thank you for your input.
_________________
'71 Westy
Sometimes you eat the bar, and sometimes the bar eats you. the Stranger |
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evanfrucht
Samba Member
Joined: July 24, 2016
Posts: 2186
Location: Laurel Canyon, CA
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| Posted: Tue Feb 02, 2021 12:30 pm Post subject: Re: painting bumpers |
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Block out with 180-220, you could finish with 320 but that might not be necessary cor what you are doing.
The primer sealer is sort of a gimmick type product. You dont need it IMO. Even using the two types of primer might be overkill. I'd say just get some simple rustoleum multipurpose primer and enamel paint. Dont overthink this... just sand the whole bumper down with 80 then 150 grit, you can apply some body filler at this point if you want to. It will hide small knicks, pitting, or deep scratches, tiny dents, etc. Then block that down with 150. Then clean the bumper and shoot with 2-3 coats of primer, then block out again. Then clean the surface of bumper again and apply 2-3 coats of paint. Let dry for atleast 3 days before even touching it.
If you had a small paint gun and compressor I'd reccomend SPI epoxy primer and then some Restoration Shop 2K Urethane single stage paint.
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1967 Bug ( the daily rod )
1964 Fury Wagon ( the pavement shredder ) |
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