color change quesion

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PostPosted: Wed Aug 10, 2022 9:39 pm
Hello everyone,

I have been working on my Scout project stripping paint but i recently aquired
another project that I bought to drive to work and save some money on fuel. It is
a 2017 ford in magnetic grey J7 metallic. I am replacing the hood and bumper cover.
The parts I purchased recently are from a 2019 in lightning blue and are in perfect condition.
My question is can I just sand the clear and primer or do I need to go all the way to factory primer or what is my best way to help the new paint match up with the old when painting the blue hood and bumper cover. I plan to use adhesion promoter on the bumper cover also.
Any advice is appreciated I have sprayed several vehicles but this is my first attempt at color match.

thanks
Dave



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PostPosted: Thu Aug 11, 2022 12:02 am
The gray metalic is probably going to cover good (but you never really know) you're going to have to blend the bumper cover and hood to the fenders to make it look right. if you just wanting to paint the cover and the hood and not do any blending. sand the old hood and see what color the primer is under the color, gray or black probably. sand the new parts with 400-600 then use some epoxy in that color mixed as a sealer and seal both parts, then your color and clear. if your going to blend to the fenders then sand the clear on the fenders with 600-800 then blend the base on the clear no sealer on the fenders then clear it all. IF you're wanting to use S/S you can do the same thing, seal then color. take your old bumper cover or something with the gray metalic color on it to you paint supplier and match the color there. for a given color code there may be 6 or more alternates (various shades of the same color) try and get it as close to one of the colors as you can. take them out in the sun and look at them closely. GOOD LUCK
Jay D.
they say my name is Jay

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PostPosted: Thu Aug 11, 2022 8:31 am
I do a lot of bumpers, if someone brings me a used bumper
to paint, regardless of what color, here's what I do if it's
original paint (not been repainted).

I first scrub it real good with a red scuff pad using a sanding paste.
I then wash it with Dawn dish detergent and dry with a towel.
After drying thoroughly and tacking off I spray a couple coats of
epoxy primer thinned to a sealer coat, like 1:1:1.
I mix my white and black epoxy for the shade I need for the final color.
I wait 24 hrs for the epoxy, then go over it with a gray scuff pad for any nibs
and sometimes lightly 600 paper for a blemish.
Tack that off real dust free and it's ready for paint.

The epoxy seals and gets you the base color needed for the color.
It also reduces future road rash tremendously because of it's increased
adhesion properties.
JC.

(It's not custom painting-it's custom sanding)



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PostPosted: Thu Aug 11, 2022 10:20 am
:goodpost:
Jay D.
they say my name is Jay

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PostPosted: Thu Aug 11, 2022 7:59 pm
Thanks guys I appreciate the info I will give it a try

Dave



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PostPosted: Fri Aug 12, 2022 11:58 am
Let us know how it turns out, your response helps other people and makes us feel good. IF it didn't work good, then don't say anything. :rotfl:
Jay D.
they say my name is Jay



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PostPosted: Fri Aug 12, 2022 7:24 pm
JC, The way I understood it was wash with Dawn then wax and grease remover then scuff pad it good. That way you didn't grind contaminates into the surface. A I going about this wrong?

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PostPosted: Fri Aug 12, 2022 10:57 pm
Sure thing I will post some pictures and info once I get started
thanks guys
Dave

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PostPosted: Sat Aug 13, 2022 8:03 am
grump wrote:JC, The way I understood it was wash with Dawn then wax and grease remover then scuff pad it good. That way you didn't grind contaminates into the surface. A I going about this wrong?


The sanding paste I use with a scuff pad is a cleaner, a very good cleaner that
removes contaminates just like W&G remover, that's what it's made for.
If I weren't using the paste then Yes you are right, clean it first.
But I believe people have it in the wrong order, Dawn dish soap is a much more
thorough cleaner than any W&G remover. W&G remover smears everything around
and relies on a second towel to transfer contaminates to.
Dawn cleans it better in my opinion and rinses it all away.
Dawn is all I use anymore, once washed with that, no need for anything else.
I only W&G for small touch ups anymore.
JC.

(It's not custom painting-it's custom sanding)



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PostPosted: Sat Aug 13, 2022 8:51 am
Thanks JC, I started working part time in body shops back in '67 but was out of it for about 16 years due to work. A lot has changed in that time. I'm slowly getting back up to speed so thank guys.
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