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  1. #1
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    Default Silver soldering on the cheap?

    I have a need to do regular fairly small silver soldering jobs, and much more rarely small brazing jobs. I was looking at the Bullfinch torch that uses LPG but wondering if there's something cheaper (they are around $380). By small job as an example brass 1/2" pipe under 2mm W/T silver soldered to brass plate under 2mm thick 40mm square.

  2. #2
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    Default

    If you use oxy with LPG you'll need a good supply of oxy!

  3. #3
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    Default

    This torch doesn't need oxygen. But it's probably overkill for the silver soldering sizes I'm doing;
    https://youtu.be/43f8AfjkpJw?t=4m14s
    Certainly more pricey than I'm hoping for.

  4. #4
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    Default

    I bought my bullfinch torch directly from the UK, If l remember correctly l paid about $200.
    l did have to change the fitting to suit our gas bottles though.

  5. #5
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    Yeah they are about UKP100 plus freight, but the UK and Ireland use a slightly different POL connector, and yes not compatible.

    I was originally looking at a MAPP torch or the Tradeflame torches that Bunnings sell, but not sure how cost effective they would be buying cylinders all the time. I can't find any details on how long the cylinders last.

  6. #6
    BobL is online now Member: Blue and white apron brigade
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    Quote Originally Posted by Gassy View Post
    Yeah they are about UKP100 plus freight, but the UK and Ireland use a slightly different POL connector, and yes not compatible.

    I was originally looking at a MAPP torch or the Tradeflame torches that Bunnings sell, but not sure how cost effective they would be buying cylinders all the time. I can't find any details on how long the cylinders last.
    I have MAPP, LPG and a small Butane torch. For very small work (wires and <1/4" diam pipe/tube) I find the Butane torch the quickest and easiest to do brazing with but I doubt it can put out enough heat to do the "brass on brass" work you require. I'm using the MAPP torch mainly for heating when I want to get small things apart and I did all the 20mm copper pipe gas line to my shed with it OK. The LPG is used to heat larger things and if I really want to heat things up I have a mains gas powered forge. The MAPP cylinders seem to last long enough (I buy 1-2 cylinders per year) but that's probably because I have a range of heating options that I can use specific to the task.

  7. #7
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    Some gas consumption figures for common Tradeflame propane burners on page 26 here:

    http://media.brintex.com/Occurrence/129/Brochure/3762/brochure.pdf

    Sorry, can't seem to get a direct link to page 26. You apparently have to go to page 26 after you open the catalogue in the link.

    Frank

  8. #8
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    Default

    I was faced with the same decision recently, and couldn't quite bring myself to spend the cash on that Bullfinch. I ended up going to Gameco and putting an LPG torch/nozzle/pipe/tank connector together for a couple of hundred dollars. I specifically wanted something that would run on LPG and connect to my BBQ tanks to avoid having to get yet another gas cylinder type in the workshop.

    The Gameco website seems to have changed, and I can't see what I ordered. They show this one, but it's for gas and air/oxy, mine is gas only. https://www.gameco.com.au/product/yi...-piece-2401-3/ If you're interested I can take a photo of what I actually got, it was a lot cheaper than the Bullfinch.

    For soft soldering, silver soldering, and light brazing this set up has been great, and it's much faster to set up and get running than the oxy set. I got a series of nozzles from very small to "big mother", so I can match the heat to the job. The LPG only (no oxy) is fine for soldering and flow brazing of smallish parts. Fillet brazing (stack of coins style) needs the oxy acetylene set. The torch is also useful for heating things for shrinking etc.

    Graham.

  9. #9
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    Default

    I have soldered up yo 1-1/8" refrigeration pipe with a Rothenberger mapgas but it did struggle to reach temp. It would never had made it if it was outside the ceiling space. But having said that I was regularly use mapgas up to 3/4 outside for smaller number of brazes.
    I get my tips from bunnings same as rothenberger but cheaper..can even get them from USA cheaper than what trade sales oulet sell them for

  10. #10
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    Quote Originally Posted by Oldbikerider View Post
    If you're interested I can take a photo of what I actually got, it was a lot cheaper than the Bullfinch.
    Thanks Graham, a photo would be good, and of the nozzles if you could.

    Thanks.

  11. #11
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    Default Silver soldering on the cheap?

    Quote Originally Posted by Gassy View Post
    I was originally looking at a MAPP torch or the Tradeflame torches that Bunnings sell, but not sure how cost effective they would be buying cylinders all the time. I can't find any details on how long the cylinders last.
    They seem to last ages. A turbo torch would be perfect for silver soldering the brass parts you described in your original post.
    Chris

  12. #12
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    Gassy,

    Here's a couple of photos of the Yildiz brand torch I got from Gameco. I selected the parts from this brochure https://www.gameco.com.au/wp-content...ochure-113.pdf

    It looks like they may only sell the torch with the trigger now, as in the link I gave earlier. I was wrong about that torch, it isn't gas/air, it's got two controls, one to set the idle and one to set the flow when you pull the trigger. In hindsight, I should have got this version because it's safer when you put it down to re-set the work or something. The one without the trigger stays on the working setting (usually full) unless you re-adjust the flow control knob.

    I've also had a Primus brand torch for 40 years, which is what I use for finer work. See last picture.

    Hope this helps,
    Graham.
    Attached Images Attached Images

  13. #13
    Join Date
    Nov 2010
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    Default Hare & Forbes current gas burner price

    Hey Gassy,

    Am currently pondering this deal https://www.machineryhouse.com.au/K075

    Might be of interest to you if you have not bought anything yet.

    Bill

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