Author Topic: Removing paint/ink from plastic signs  (Read 304 times)

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Offline kerick

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Removing paint/ink from plastic signs
« on: January 09, 2018, 04:04:34 pm »
As my subject line suggests, has anyone used a solvent to remove the paint or ink from plastic signs? I know I can sand it off but its a pain to do a large area. I was thinking of trying oven cleaner or degreasing detergent in the same way as enamel paint. I'm hoping someone has an easier method.
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Offline salt6

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Re: Removing paint/ink from plastic signs
« Reply #1 on: January 09, 2018, 07:23:11 pm »
Might try lacquer thinner.
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Offline TheChronicOne

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Re: Removing paint/ink from plastic signs
« Reply #2 on: January 09, 2018, 08:31:16 pm »
This may sound nutty.. but... bleach?

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Offline zenrat

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Re: Removing paint/ink from plastic signs
« Reply #3 on: January 10, 2018, 01:56:50 am »
Brake fluid.  Although it will cause embrittlement of the plastic if left on too long.

However, try GP thinners first.  It certainly cleaned the writing off a sign I was cleaning.  Shame, as I was only trying to remove overspray and wanted to keep the words.
Fred

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Offline Dizzyfugu

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Re: Removing paint/ink from plastic signs
« Reply #4 on: January 10, 2018, 02:30:54 am »
Oven cleaner foam, and patience. Works wonders if you give it some days, and it is by far less aggressive than brake fluid.

Offline kerick

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Re: Removing paint/ink from plastic signs
« Reply #5 on: January 10, 2018, 07:06:42 pm »
I'll try Zenrat's idea first. I think you mean general purpose thinners for paint. I know lacquer thinner will melt the plastic. Engine degreaser will remove enamel paint so I might try that too. Thanks for the suggestions!
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Offline zenrat

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Re: Removing paint/ink from plastic signs
« Reply #6 on: January 11, 2018, 12:00:10 am »
I meant General Purpose Thinners sold for spraying cars.
But they may melt some plastics so be carefull.
They certainly quickly eat through latex gloves so wear some of the black chemical resistant ones.
Fred

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Offline kerick

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Re: Removing paint/ink from plastic signs
« Reply #7 on: January 11, 2018, 01:31:42 pm »
I have some hardware store paint thinner I'm going to try.
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