Author Topic: Pitted chrome  (Read 3263 times)

Offline 68 S Code

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Pitted chrome
« on: March 02, 2011, 10:54:48 AM »
I am thinking of refinishing my original upper windshield header brackets at the corners which hold the visor and the top clamps to. I could go and get the repops but have gone so far using original parts that I thought I would tackle this. Problem is that there is some pitting. Someone mentioned that you sand off the zits. Well I tried doing that on an old mirror with mixed results. I remember that I had a latch assembly for the top media blasted and once they finished all the pits and chrome were gone. I found a dull brass finish but no pitting. Is this what is done to prep parts for replating. If I had this done to the corner trims would the pits disappear? So many knoowledgable people here that I figured someone would know the answer.

Offline bryancobb

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Re: Pitted chrome
« Reply #1 on: March 02, 2011, 11:01:15 AM »
I used a tiny pneumatic die-grinder with one of those Scotch-brite discs on it.  It spins high RPM and smoothes them out nicely.

66 Metuch Conv
Nightmist, Std Blu Int
6T08C223904    76A       K         22       15c     21      6        6
                      BODY  COLOR   TRIM    DATE   DSO   AXLE  XMSN
   C/O  785                                   (rotation #)
   16    C14   6T08C223904        (weld bay 16, bucked MAR 14)

Offline 68 S Code

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Re: Pitted chrome
« Reply #2 on: March 02, 2011, 02:49:50 PM »
But I noticed that once the raised part got nocked off there was a divit below. Do you need to sand all the material around the divit to even the surrounding surface down to the bottom of the pit? 

Offline bryancobb

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Re: Pitted chrome
« Reply #3 on: March 02, 2011, 03:08:07 PM »
If you look closely you can see every one if you have 20/20.  Still better that repro if you ask me.
66 Metuch Conv
Nightmist, Std Blu Int
6T08C223904    76A       K         22       15c     21      6        6
                      BODY  COLOR   TRIM    DATE   DSO   AXLE  XMSN
   C/O  785                                   (rotation #)
   16    C14   6T08C223904        (weld bay 16, bucked MAR 14)

Offline MyRed66GT

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Re: Pitted chrome
« Reply #4 on: March 02, 2011, 06:37:09 PM »
The better chrome plating places will actually drill out the pits and fill them in. Then I assume they sand and buff out before the plating process.

Offline 68 S Code

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Re: Pitted chrome
« Reply #5 on: March 03, 2011, 10:24:46 AM »
To drill them out, fill and sand smooth it sounds labor intensive (expensive ). Is there a visible difference with the repops? Has a set but can't find them anywhere.

Offline 68 S Code

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Re: Pitted chrome
« Reply #6 on: March 15, 2011, 01:37:32 AM »
Well I experimented with the grinder over the weekend and wasn't happy. Luckily tried it on a spare. The divots were very pronounced. Visited a local plater and he was a waste of time. Kept telling me that he's sire the header pieces should be shiney chrome. Forgot to tell him that in 68 a new Fed law required a duller finish to combat glare to drivers.

Kind of stuck. Anyone know of some clean ones or NOS?

Offline jk66gt350

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Re: Pitted chrome
« Reply #7 on: March 15, 2011, 08:26:44 PM »
This is not an ideal solution, but what I did for the same parts on my 70 Cougar convertible.  I ran into the same challenges and ended up 1) sanding them down, 2) filling in the pits with liquid metal, then sanding to a smooth finish, 3) spray painting with multiple coats of chrome paint (Krylon Premium / Original Chrome), and then 4) buffing the chrome paint which dulled it to a very similar color and finish to the original satin finish chrome.  They are prone to scratching so you have to be more careful than with re-chromed parts, but they look great.     

Offline 68 S Code

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Re: Pitted chrome
« Reply #8 on: March 17, 2011, 06:30:31 PM »
I was told that Imron paint is as strong as powder coAting.  Should be able to get color pretty close.