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#223006 Sun Jan 02 2011 02:20 PM
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I have been looking for this sign for a long time and a few months back I had the chance to purchase one. I have tried to clean it up with various methods but nothing has worked. The condition is not so great. I was thinking of clear coating it to bring the shine back. See the pictures and let me know if I should leave it as is or clear it. Thanks in advance!!!





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Touch it up & clearcoat, then enjoy & hope to upgrade if you find a better one.

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I've never clear coated a sign, so I can't/won't speak to that.

The rust spots can be cleaned up quite easily, by trying my alum foil method. I explained my methods in my thread about the Veedol 5 gallon can I cleaned up.


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Lucky Lone Star (Aaron) has one but HE WONT SELL IT LOL!!! I think it's because he knows I love the old Firestone signs smile


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It looks like porcelain to me, is it? If so, you'll have to mechanically scuff it pretty good to give it any "tooth " for the clear to stick to it. Why not try to get rid of the rust with an oxalic acid bath and then touch it up with enamel? I know I'm new to this site, but I've been painting signs (the old-fashioned way) since the 70's

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I agree with DB & Bob. Barkeepers Friend & a mild scrub pad will take the rust stains right off smile


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I tried the BKF with a mild scuff pad with no luck. Left it on for about a minute and then cleaned it off- After it dried all the stains came back- Unless I am missing something?

It is a porcelain sign

Last edited by 57tbirdkid; Sun Jan 02 2011 02:50 PM.

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Use muratic acid to remove the rust stains. Find some very fine white rubbing compound and use a buffer to bring out the gloss. Tough it up. You won't need to clear coat it.


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Another Picture to show the amount of staining:

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Last edited by 57tbirdkid; Sun Jan 02 2011 03:05 PM.

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When using muratic acid, keep Baking Soda water handy to neutralize & wear protection. Best to use outdoors.

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Plus a good coat of wax would help!

Randy


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Originally Posted By: 57tbirdkid
I tried the BKF with a mild scuff pad with no luck. Left it on for about a minute and then cleaned it off- After it dried all the stains came back- Unless I am missing something?

It is a porcelain sign


BKF is a very weak solution, I'd think the rust is too heavy for that. Muriatic acid is an option, but it's very strong, and oxalic acid works, but even with that, you would need to keep it wet for a couple of days. The only think I don't know about is whether it would affect the porcelain finish. It would be good to do a little experimenting first. I order oxalic acid from a veterinary supply (Van Dyke) and use it to remove rust on antique auto parts. It works great, but use with gloves and safety glasses and use it outside.

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I have never had any luck trying to bring the shine back to a "cobalt Blue" porcelain sign. I've tried everything mentioned on this post so far. If one of them ends up working, please report which one, and the step by step, on how you got it to work. Thanks, Don


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DO NOT leave muratic acid on for long periods of time [like overnight] as it will eat the metal under porcelain [learned the hard way].

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SMOOTH SOME HOWARD'S FEED & WAX OVER IT, THAT WILL KEEP IT GLOSSY FOR A WHILE. RE-APPLY WHEN IT GETS DUSTY AND DULL. SIMPLE. wink


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