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Thread: Retrobright by sun only

  1. #1

    Default Retrobright by sun only

    My recent experience here (with photos):
    https://www.classic-computers.org.nz...e-sun-only.htm

    Quite a positive result.

    Tez
    ------------------------------------------------
    My vintage collection: https://classic-computers.org.nz/collection/
    My vintage activities blog: https://www.classic-computers.org.nz/blog/
    Twitter: @classiccomputNZ ; YouTube Videos: (click here)


  2. #2
    Join Date
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    Default

    Tez, very interesting--have you identified which kind of UV is responsible? (UVA, UVB or UVC)? My guess is probably UVC.

  3. #3

    Default

    Quote Originally Posted by Chuck(G) View Post
    Tez, very interesting--have you identified which kind of UV is responsible? (UVA, UVB or UVC)? My guess is probably UVC.
    I don't know Chuck. I don't have my head around all the science and as I said in the article, people are still debating it. should sit down sometime and read, and try to understand all the articles that deal with this. It would make a good desk research project. Perhaps when I'm in COVID-19 isolation (:
    ------------------------------------------------
    My vintage collection: https://classic-computers.org.nz/collection/
    My vintage activities blog: https://www.classic-computers.org.nz/blog/
    Twitter: @classiccomputNZ ; YouTube Videos: (click here)


  4. #4
    Join Date
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    I'm thinking about my old EPROM eraser with the germicidal fluorescent tube in it. It's got years of wear and the UV has turned the gray plastic interior brown--sort of a reverse retr0brite.

    Similarly, I've had gear that stood near a window for years and the side facing the window is yellow-brown.

    It's a puzzle.

  5. #5
    Join Date
    Apr 2018
    Location
    Los Angeles, CA
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    Interesting. I've been meaning to give this a try but 'Sunny Los Angeles' has been anything but, the last few months. I have a number of things I've been planning on retrobrighting once the weather picked up again, so I should give this a try. I do appreciate the quality of your blog posts.
    -- Brian

    Systems: Amstad PCW 8256, Apple IIe/II+/GS/Mac+/Mac 512k, Atari 800/520STFM, Commodore 64/128/Amiga 3000/PET 4032/SX-64, IBM PS/1 2121-B82, Kaypro II, Osborne 1, Tandy 1000 SX, TI-99/4A, Timex Sinclair 1000, TRS-80 Color Computer 3/Model 4 GA

  6. #6

    Default

    Quote Originally Posted by Chuck(G) View Post
    I'm thinking about my old EPROM eraser with the germicidal fluorescent tube in it. It's got years of wear and the UV has turned the gray plastic interior brown--sort of a reverse retr0brite.

    Similarly, I've had gear that stood near a window for years and the side facing the window is yellow-brown.

    It's a puzzle.
    Yes, I think there are plastics and there are plastics. I had a printer in my office that yellowed to the extreme. Never ever saw direct sunlight. Wasn't even near a window!

    Tez
    ------------------------------------------------
    My vintage collection: https://classic-computers.org.nz/collection/
    My vintage activities blog: https://www.classic-computers.org.nz/blog/
    Twitter: @classiccomputNZ ; YouTube Videos: (click here)


  7. #7
    Join Date
    Oct 2013
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    Miami, FL
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    Interesting. We have a lot of sun here in FL so I may try this with a Leading Technology EGA CRT I acquired recently.

  8. #8

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    amazing Terry! I think Canada has 2 weeks where I can do this

  9. #9
    Join Date
    Oct 2013
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    Miami, FL
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    Forgot to try this out. Will need to try again soon. We are having a lot of sun and a drought to boot due to persistent high pressure over Miami metro.

  10. #10
    Join Date
    Jan 2005
    Location
    Principality of Xeon W-2140B the Great State of Central New Jerky
    Posts
    2,284

    Default

    Sun and rainwater works. It may lime kind of bleached out though. Mayne I left them.out too long. 6 months.

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