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Joined: Dec 2007
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I picked up one of those 5ft US Tire porcelain signs. It has some sort of very hard coating over the entire sign. I don;t know if it is just age, and the porcelain is turning or what... There is good color under this hard coating. It is almost like a very hard clearcoat that has yellowed. You can't see any of the orginal blue of the sign except where I have removed some of this hard shell. Removal was drastic as nothing else I tried worked. A wire brush on drill was able to cut through it and expose blue underneath. I don't want to wire brush this sign for fear of damage, anyone have any other suggestions?

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You can use any paint stripper on porcelain signs without damaging the or harming the them. Just use a plastic puddy knife while removing the stripper so you dont scratch the sign. I would not use a wife brush as this will scratch the sign & decrease the value & looks of the sign. Good luck & keep us updated smile


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I have a 6ft pure sign that had a union 76 glued to it for 30 years I almost gave up on getting the hard black glue off. I used a good toilet bowl cleaner and a plastic putty knife and it came off. Be careful of any cracks in sign and only use cleaner for 5 min and remove until you see how long you can leave it without damage to sign.Porcelain is tough but start on edges of sign. Good luck.


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paint stripper didn't phase it...I will try the toilet bowl cleaner I guess...aggrivating knowing nice blue porcelain is under this hardened mess

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Try an Industrial Paint stripper, not a Home Depot product.

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I'VE ACTUALLY USED A TORCH ON SOME REALLY HEAVY TOUGH BUILT UP CRUD ON A SIGN I GOT FROM EBAY A COUPLE YEARS AGO. THE RESULTS WERE AMAZING!

BEFORE: THE SUBSTANCE RESEMBLED BONDO...


DURING: I HEATED THE CRUD, 3/8" THICK IN SOME PLACES AND QUITE CRUSTY. I DID THIS SLOW WITH THE HEAT AT A MEDIUM GLOW...


AFTER: THIS SIDE OF THE SIGN WAS ACTUALLY IN BETTER PRESENTABLE CONDITION WHEN I WAS DONE. I FINISH WIPED THE SURFACE WITH LACQUER THINNER 3X!


I WOULD SUGGEST IF YOU DO ATTEMPT USING A BLOW TORCH, TO TEST TRY IT IN AN AREA FIRST LIKE IN A CORNER OR ALONG AN EDGE.


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db is right....aircraft, industrial grade stripper...auto parts or auto paint store...
and follow the instructions!!!!


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how about a heat gun, if I don;t have a torch?

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Autozone has Aircraft paint stripper.

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...how about a photo of what you're dealing with?


Looking for better Gulf items: signs, globes, cans and paper - especially porcelain Gulf flanges, and Gulf A-38 & A-62 ad glass...

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