Petromax 882 questions

Discussion in 'Pressure Lamp Discussion Forum' started by Tony Press, Sep 10, 2024.

  1. Tony Press

    Tony Press Australia Subscriber

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    @Henry Plews

    No. It's a reproduction globe made by "Mappio" in Thailand. I will show full details of the glass in the Reference Gallery soon. The glass is for an Optimus 883, so the correct base diameter but taller than a correct 882 glass (which I'm still on the hunt for).

    Today I shall use the photos you posted in an earlier thread (thank you) to make the rotating clip to hold the globe in place.


    Cheers

    Tony
     
  2. Tony Press

    Tony Press Australia Subscriber

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    Almost there, but I’m away from the workshop this week…

    Correct size glass:

    IMG_4537.jpeg

    Now to manufacture the clip that holds it in place.

    Cheers

    Tony
     
  3. WimVe

    WimVe Subscriber

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    Are you sure about the glass size?
    Diameter seems to small looking at the bottom and top hole to large.
     
  4. Tony Press

    Tony Press Australia Subscriber

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    @WimVe

    I’ll see when I get to fit it with the holding clip.

    I’ve not been able to uncover the measurements of an original: this copy is from Thailand.

    Cheers

    Tony
     
  5. WimVe

    WimVe Subscriber

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    Well on your earlier picture it looks as if the glass fits better. But this can be an optical illusion.
    Is your glass catch completely missing or only the latch?
     
  6. Tony Press

    Tony Press Australia Subscriber

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    @WimVe

    This is all I have (no part of the latch).

    IMG_4547.jpeg


    Cheers

    Tony
     
  7. WimVe

    WimVe Subscriber

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    ah well, seems you have the right position as well as the hole for it ! :content:
    I will take some measurements and pictures. Hold on.
     
  8. WimVe

    WimVe Subscriber

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    Some pictures as well as dimensions.
    Made of pertinax (?),
    all corners rounded. Latch height (3mm) is difficult because I don't want to bend mine before I have globes.
    Height of the part is without the rounded tops, so include 2mm extra I guess.
    Paper grid is 5mm

    ps the last picture (6) is not the right position, just a way to keep the metal part stand up.
     

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    Last edited: Nov 10, 2024
  9. Tony Press

    Tony Press Australia Subscriber

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    @WimVe

    Thank you indeed.

    Between your and @Henry Plews contributions, I will make a part to do the job, but it will be “functional”, not a copy, I’m afraid.


    Cheers

    Tony
     
  10. Tony Press

    Tony Press Australia Subscriber

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    @WimVe

    I have mocked up a clamp for the glass, and it works! The glass can be locked in place and will not move.

    I will now manufacture a final version; but I am again very busy this week at a conference, so it will have to wait until the weekend.

    IMG_4686.jpeg



    While this copy of the original Petromax globe may not be exact, it will work on this lamp.


    Cheers


    Tony
     

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