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Old 8th May 2021, 09:04 PM
Mike O'Pray Mike O'Pray is offline
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Default Cleaning Clear Plastic Cover on Darkroom Timer

Has anyone any experience in cleaning the clear plastic cover over the dial on a darkroom timer. The one I have has some slight scratches and looks a bit foggy overall especially by the slight scratches .

I tried isopropyl alcohol on a soft cloth and that seemed to help clear it but it was only slightly.

When I googled it, white tooth paste was suggested rubbed in with a soft cloth or using white vinegar with baking soda or even plastic scratch remover

However there is nothing like user experience so has anyone tried to do this with any success?

The irony is that I threw away my broken old Smiths timer a number of months ago and the cover on that was near perfect.

If only I had kept the cover

Thanks

Mike
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Old 9th May 2021, 09:18 AM
John King John King is offline
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Default Cleaning up plastic

I have had a degree of success with an extremely fine polishing paste used by car body finishers to remove light scratches. It is so fine it makes 'T' cut feel like pebbles in cream!

I have an old but useful Epson v500 flatbed scanner which originally had a mirror finish black lid. A careful polish with the compound then wiped off with a damp cloth and allowed to dry. Then a coat of simonize car polish brought it back to almost new.

The cloth you use for all stages should be similar to the yellow dusters you mum used to use.

The metal polish Solvol Autosol is almost as fine as the compound I used, the key afterwards is to use a good wax polish like simonize. A 2nd coat is even better.
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Old 9th May 2021, 02:18 PM
Richard Gould Richard Gould is offline
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Default

There is a cleaner for plastic rear windows in convertable cars, it cleans a clears scratches, I always have some in for my MG, and I have used it for other plastics, then there is 'as John says, fine paste for scratch removal on car paintwork, which should, but I hav also had sucess with WD40, id will clean plastic lenses on modern cars, I have also used it for all sorts of plastic cleaning, and we also use it on our Classic cars for light scratch removel
Richard
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Old 9th May 2021, 08:33 PM
Mike O'Pray Mike O'Pray is offline
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John and Richard, thanks both for your suggestions

Mike
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