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Trench Candles

Discussion in 'Brights, Gizmo's & toys' started by Wayland, Jul 8, 2019.

  1. Janne

    Janne M.A.B (Mad About Bushcraft)

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    Surely any over pressure should dissipate through the wick tube?
    If the fuel gets hot and evaporate the hole will act as a vent, and you get a blowtorch effect.
    I imagine.
    Need to go and get some materials tonight...
     
  2. Wayland

    Wayland Hárbarðr

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    It surprised me, when I slipped the cap on, that there was enough of a seal to "pump" paraffin up the wick. I thought that there would be sufficient air gap between the pipe and the cap for that not to happen.

    Obviously not.

    The breather hole should certainly cure that issue even though it was not much of a problem really.

    Going on the performance in a lantern yesterday, I don't think these will get hot enough to create a blow-lamp effect.
     
  3. Janne

    Janne M.A.B (Mad About Bushcraft)

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    Depends on the speed of putting the cap back on. Slowly - gives time for the air to escape.

    I used to use an old, 1920’s Primus with a worn leather seal.
    Pumping quick pressurised it, pumping slow did not.

    I assume they made lamps like this in the trenches, from spent cartridges?
     
  4. crosslandkelly

    crosslandkelly A somewhat settled

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    Sorry Wayland, I just had to try a take on your lamps. ;)
    Like you, I thought them ideal for the folding lanterns.

    IMG_20190709_154055.jpg
     
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  5. Wayland

    Wayland Hárbarðr

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    Not sure where the name came from, that is just what I heard them called the first time I saw one and yes, it was made from a spent casing.

    I've also heard simple cresset style lamps made with fat and newspaper called trench candles so who knows.
     
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  6. Wayland

    Wayland Hárbarðr

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    Well the wicks I ordered are too thick for the tubes...

    Looks like I'll be running on mop string this weekend then.
     
  7. Broch

    Broch Full Member

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    Sorry Wayland, I just had to have a go at something like this. My stock of copper solder fittings was low so I've knocked up my SP version using compression fittings. The candlestick I've had since I was a kid (two in fact). I may put the nuts in the lathe and take the corners off.

    2019-07-11 15.05.37.jpg
     
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  8. Wayland

    Wayland Hárbarðr

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    No need to apologise, If I didn't want people to copy my ideas, I wouldn't post them up.

    It's nice to see how others do things as well. I made mine for particular uses and was constrained by that.

    I think the compression fittings add a different dimension to them. Very "Steampunk" actually.
     
  9. Nice65

    Nice65 Full Member

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    So who’s going to make the first candelabra? :)
     
  10. Wayland

    Wayland Hárbarðr

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    I've already made a rack to carry pack them in and keep them upright for transit.

    Could also be used like an adventsljustakar...
     
  11. Keith_Beef

    Keith_Beef Native

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    hemlagad lyktor: vår väg till en ljusare framtid!
     
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  12. Broch

    Broch Full Member

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    Not sure they're brighter but they do have atmosphere :)
     
    #32 Broch, Jul 12, 2019
    Last edited: Jul 12, 2019
  13. Broch

    Broch Full Member

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    I knew I had a couple of these somewhere; 1/2" cal shell and a scrap brass insert from a radiator valve :)

    This could get obsessive!

    2019-07-12 17.32.51.jpg
     
  14. Nice65

    Nice65 Full Member

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    Now that is splendid!

    I’ve got a few .50 cals in their links that my dad nabbed off a downed plane in WW2. I’d do something with them but the caps are intact, though the propellant used for dads schoolboy fun. During which they set the school shed alight with the phosphor from an incendiary bomb. Blimming kids. :D
     
  15. Broch

    Broch Full Member

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    Mmmm…. I think the cap's been fired; better check :)
    yep, definite fire-pin dimple!

    I did have a whole box of them at one time but one of my less-than-ideal employees (actually, probably the only one I ever had) nicked them :(
     
  16. Wayland

    Wayland Hárbarðr

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    [​IMG]

    I forgot to post up a picture of these properly in action so here you go.
     
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  17. Wayland

    Wayland Hárbarðr

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    I needed to make another couple of these today so I stopped along the way to photograph the components for anyone interested.

    [​IMG]

    The base, known here as an end feed cap, is soldered on. Note the cleaned up pipe end for a better joint. Wipe it with a little flux , heat the joint with a blow torch while touching the opposite side of the joint with the solder. When the solder melts it will flow into the joint where the flux is.

    The top cap is left loose so that it can be filled easily, drilled through with the thin copper tube for the wick holder, pushed through, it could be just a friction fit but I soldered it in as well for durability.

    I added a tiny, 1mm, breather hole in the top of the cap to alleviate the slight compression that tended to squeeze paraffin up through the wick when first sliding the cap on. A simple modification but it seems to keep things a bit cleaner.

    I just use a twisted bit of cotton mop string for a wick.
     
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