Smooth Out Calipers Before Painting, How? - Ford Mustang Forum
 
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post #1 of 14 (permalink) Old 12-29-2013 Thread Starter
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Smooth Out Calipers Before Painting, How?

I'm buying a set of OEM take-off GT calipers front & rear. My plan is to paint them or have them powder coated. But before doing that I want to make them smooth as possible, the OEM calipers are pretty rough.

What is the best way to do that? Bead-Blasting? Sand Blasting? Some other technique?


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post #2 of 14 (permalink) Old 12-29-2013
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Quote:
Originally Posted by HarrishMasher View Post
I'm buying a set of OEM take-off GT calipers front & rear. My plan is to paint them or have them powder coated. But before doing that I want to make them smooth as possible, the OEM calipers are pretty rough.

What is the best way to do that? Bead-Blasting? Sand Blasting? Some other technique?
Use a portable grinder, then some sandpaper to smooth out the casting ridges. Then you're ready to paint or powder coat them.


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post #3 of 14 (permalink) Old 12-29-2013
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A die grinder would work too. Get a couple carbide burrs and then some sand paper cartridge rolls.


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post #4 of 14 (permalink) Old 12-29-2013
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I would think that since the powdercoating process involves a preliminary sandblast.... that should take the roughness out. Also, the "melting" of the powdercoat during the heat process should even out the surface considerably.
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post #5 of 14 (permalink) Old 12-29-2013
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My choice of tool would be a dremel. Do not rely on sandbllasting, that will not smooth out the surface. Here is a thread showing the results of using a dremel and then painting the calipers. After spending as much time as this person did on making the calipers look really nice, I would have chose to have the calipers powder coated rather than painting them. I wonder how the paint has held up? My guess is they may have not wanted to disassemble the calipers to have them powder coated.

https://www.allfordmustangs.com/forum...-calipers.html

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post #6 of 14 (permalink) Old 12-29-2013
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Quote:
Originally Posted by Paul_VS View Post
I would think that since the powdercoating process involves a preliminary sandblast.... that should take the roughness out. Also, the "melting" of the powdercoat during the heat process should even out the surface considerably.
Sand blasting is a cleaning and surface prep process, and depending on the media being used can actually make the surface rougher if you're not careful.

There are lots of different abrasives out there to use for smoothing out the calipers, flap wheels, disc grinders of all sizes.

You just don't want to go too far in the smoothing process.

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post #7 of 14 (permalink) Old 12-29-2013
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A lot of work with a dremel + sanding wheel. It's not too hard. Just takes a while.


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post #8 of 14 (permalink) Old 12-30-2013
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Hawkeye, those are amazing looking for what they are.

I was going to say just apply the caliper paint and finely sand between coats, but that blue looks amazing!
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post #9 of 14 (permalink) Old 12-30-2013
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A lot of work with a dremel + sanding wheel. It's not too hard. Just takes a while.

Wow, that is sick!! Awesome looking.
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Quote:
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A lot of work with a dremel + sanding wheel. It's not too hard. Just takes a while.

those do look amazing! Is that powder coat?

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Quote:
Originally Posted by hawkeye18 View Post
A lot of work with a dremel + sanding wheel. It's not too hard. Just takes a while.

I pride myself with having the shiniest car in any parking lot...and this piece is shinier than my car!!!

Last edited by magnido45; 12-31-2013 at 11:09 AM. Reason: mistype
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Quote:
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A lot of work with a dremel + sanding wheel. It's not too hard. Just takes a while.

Damn


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Lol thanks. It's powdercoated Candy Blue. The powdercoater did a very good job. It is the caliper to a '94 Taurus SHO. This is what it looked like on the car (the bracket was powdercoated black):



I think powdercoating is a good option.


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Quote:
Originally Posted by BLK 5.0 View Post
My choice of tool would be a dremel. Do not rely on sandbllasting, that will not smooth out the surface. Here is a thread showing the results of using a dremel and then painting the calipers. After spending as much time as this person did on making the calipers look really nice, I would have chose to have the calipers powder coated rather than painting them. I wonder how the paint has held up? My guess is they may have not wanted to disassemble the calipers to have them powder coated.

https://www.allfordmustangs.com/forum...-calipers.html
Spot on! I used my Dremel tool as well with the supplied sandpaper cartridges as the end result was perfectly smooth, I then bought a pack of 10 finer sandpaper and went over it with those, baby ass smooth, had mine done over a 2 day period, all 4 calipers, then masked and painted with a black high heat automotive paint,( 4 thin coats lightly sanded with ultra fine sandpaper in between coats, finished with a matt clear coat ) , that was done 2 years ago, and it still looks new !

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