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  1. #1
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    Dec 2007
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    Default Oxy/LPG. Heating Tip

    I use my torch in the smithy for heating precise points that I can’t get in the Forge. For example when I built my tables and had to assemble all the peeled over tenons. I couldn’t put the half assembled table in the Forge to heat the last tenons.

    I also use it to heat solid rivets in place and some times for bending.

    My range of stock I’d generally be using the torch on is 5mm-30mm.

    So far I have been getting away with using a cutting tip, but want to change over to a heating tip (rosebud?).



    I haven’t had much luck finding info on what size tip works for stock size needing heating. Also do the heating tips require a different mixer to the cutting tips?

    Anyone have any experience in this area?
    …..Live a Quiet Life & Work with your Hands

  2. #2
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    Aug 2008
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    Default

    have a monster tip that I bought when I was still using acetylene. It seems to work OK with LPG.
    Gold, the colour of choice for the discerning person.

  3. #3
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    Default

    .RC. What diameter and how many holes? Is the series it heats proportional to the dia of the tip or multiple times greater area?


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  4. #4
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    Jan 2004
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    Default

    The LPG tips don't have the BTU output the acetylene ones do.

    Accordingly, I would get the one that produces the most BTU's as the heat out is pretty dismal.

    I don't know if they have BTU listings for LPG but I dimly recall workshop discussion on the Acetylene jobbies.

    Be aware though that the oxy consumption is higher than the comparative consumption of Oxy-Acetylene. I can't remember how much but it was noticeable.

    Grahame

  5. #5
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    Default

    Quote Originally Posted by DSEL74 View Post
    .RC. What diameter and how many holes? Is the series it heats proportional to the dia of the tip or multiple times greater area?
    I do not know much about it other then it is this one and it takes a bigger pipe then normal heating tips

    COMET S/Heating Tip SHA2 Oxy/Acet Size 12x12 - Cigweld

    When used with acetylene it puts out a tremendous amount of heat, with LGP, no where near as much but is very handy for what I use it for. I do not know the safety factor for using it with LPG. It might be bloody dangerous. Although LPG needs oxygen to burn.
    Gold, the colour of choice for the discerning person.

  6. #6
    Join Date
    Feb 2012
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    Sydney
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    Default

    I have several of the Comet series Oxy-LPG heating tips but haven't compared them to the Oxy-Acet heating tips.
    Here's a link to CIGWELD's Comet series: http://www.cigweld.com.au/wp-content...%20Cutters.pdf
    If the link doesn't work, search for publication GEQBCC Rev 1. On pages 15 - 16, it lists the heat output in MJ/hr as well as the respective gas consumption. Note that CIGWELD's specs show Oxy-LPG to have greater heat output in MJ than the Oxy-Acet. The Oxy-LPG tips are certainly heavy lumps of copper. Hope this helps.

  7. #7
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    Default

    Quote Originally Posted by Grahame Collins View Post
    The LPG tips don't have the BTU output the acetylene ones do.

    Accordingly, I would get the one that produces the most BTU's as the heat out is pretty dismal.

    I don't know if they have BTU listings for LPG but I dimly recall workshop discussion on the Acetylene jobbies.

    Be aware though that the oxy consumption is higher than the comparative consumption of Oxy-Acetylene. I can't remember how much but it was noticeable.

    Grahame
    Not forgetting of course that Oxy LPG can run vastly larger tips than Acetylene without having to resort to a manifold set up. Acetylene has an advantage as far as concentrated heat goes, but LPG is undisputed king of outright BTU output, (triple the BTU output in fact) when taking advantage of the larger tips.
    Be careful with Acetylene heating as there is a draw off rate that must be observed and can easily be exceeded when the smaller D and E cylinders are in use.

  8. #8
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    Oct 2008
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    Default

    Thanks for the reminder not to use the bigger heating tips with D sized acetylene cylinders. I just checked mine, which I haven't used for years, and its required acetylene flow rate is way beyond the maximum allowed from a D size.

    Frank.

  9. #9
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    Dec 2007
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    Default

    I found out all the heating tips for oxy/Lpg (with all makes I’ve found). Take a larger pipe 1/2” or 13mm. Acetylene can use the std pipe.


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