Primus Optimus blowtorch info needed

Discussion in 'Open Forum' started by Rod2500S, Jan 24, 2025.

  1. Rod2500S Australia

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    Hi All
    Just joined up and need some data on the torch pictured.
    Year of manufacture etc, would be great.
    I have seen pictures of a complete one and will fabricate new steel parts for it, including the preheater spirit cup and a new top soldering iron holder. The pump is already fettled and I'll make a new wick for it.
    Cheers
    Rod Primus blowtorch 1.jpg Primus blowtorch 2.jpg Primus blowtorch 2.jpg
     
  2. Rod2500S Australia

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    Gday also need to know how the main head unit is sealed to the pump tank. Is this done with some form of sealant?
    And your opinions on the wick please.
    Cheers all
    Primus blowtorch 4.jpg Primus blowtorch 3.jpg
     
  3. Rod2500S Australia

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    Fettling update Pics show new part fabricated and the old part
    I hate rust. Will be painted with matt black etch primer and heat will do the rest.
    Cheers
    Rod
    Primus blowtorch 6.JPG Primus blowtorch 10.JPG Primus blowtorch 5.JPG Primus blowtorch 9.JPG Primus blowtorch 7.JPG Primus blowtorch 8.JPG
     
  4. Andrew T

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    That part was well done and looks very much like the original.
     
  5. Tony Press

    Tony Press Ukraine Subscriber

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    Great job!

    Tony
     
  6. Sedgman

    Sedgman Subscriber

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    These Self Heating Soldering Irons (SHSI) are interesting and your Optimus looks to be an early one possibly the mid-thirties onwards to perhaps mid-fifties. Primus models in the 1934 catalog look quite similar excepting for the tank flutes which are more common on Optimus and Sievert brands. Australian brand ones such as Darlton are generally post war to the late fifties.

    Because they usually run on Coleman Fuel / Shellite I would investigate some sort of petrol resistant joint sealant.

    Nice job on making the part. Mostly (but not all) the burner covers and spirit cups have rusted away or are badly damaged on those that I have seen or acquired.

    SHSI - Copy.jpg
    1947-1963 Darlton SHSI
     
  7. Rod2500S Australia

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    Gday all
    thanks for all the kind remarks lads.
    The torch is now finished as in the pics, and I only need to seal the pump thread where it screws onto the head with something, not sure what yet, I'll keep you posted on this.
    The small copper rivets are hand made and are 5mm long and 1.8mm in Dia.
    The cup is a small pill? case and the stand was based on the one and only photo of an original torch I could find on line.
    Cheers
    Rod

    Primus blowtorch 11.jpg Primus blowtorch 12.jpg Primus blowtorch 13.jpg
     
    Last edited by a moderator: Feb 5, 2025
  8. podbros

    podbros United Kingdom Subscriber

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    Nice job :thumbup:
     

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