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Old 02-29-2012, 09:26 AM   #21
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New Brunswick Re: Silver soldering structural parts

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Old 03-01-2012, 01:22 AM   #22
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Re: Silver soldering structural parts

Originally Posted by Larry Pierce View Post
Hello There:

A little more info on the Beaufighter Undercarriage, using the same Solder and Flux
as mentioned earlier. Have used three different torches for this project ,for large bits
Oxygen and MAP Gas, for smaller bits Ronson AeroTorch using Butane. for general
single items in open areas CTC MAP torches. The material is mostly 4130 steel.
including tubing and sheet stock, for small dia. tubing eg. 3/16" using CTC brake line,
this works good in areas with no bending loads.
Larry, Could you please give us more information on how you decide what torch to use and why. It would appear from your comments that for a small part you use a small flame? If you only had one torch to use what would be the best?
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Old 03-01-2012, 06:50 AM   #23
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Re: Silver soldering structural parts

Hello There:

To answer your question, the best all around torch is the Oxygen and MAP gas.,
however this is also the most expensive to use. The Oxygen cost around $11.00
a bottle and lasts for approx. 10 mins. I like to use the Butane for smaller parts
as it has a hot and a clean flame. The CTC Map gas torch is not as hot as the others
therefore it takes longer to heat the area you are soldering, this then heats the
the rest of the part, if there are previous soldered parts you run the risk of melding
the joint. It is the less expensive to use and for single joints works fine.
Clean parts are important for a solid joint. If you plan on doing a lot of soldering
a portable sand blaster comes in handy.

Hope this helps.
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Old 03-01-2012, 09:24 AM   #24
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Re: Silver soldering structural parts

I was picking up some Aluminum filler metal at a supply shop in Edmonton and noticed a smaller torch. It is call a turbo torch and uses the smaller ace commercial bottles with no oxy. It is used in the HVAC industry and had interchangeable tips like a typical victor torch. They price around $300 plus a bottle rental. If I didn't all ready have a couple oxy/ace torches I would have picked one up.

Another customer in the store mentioned they use the turbo torches in the construction of home build aircraft. Not knowing this guy from Adam. Not sure if this is true. I always assumed the tubing in aircraft would be tig welded.

Just another option out there.

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