Technoweld

[Allan Waterfall]

I need to join some aluminium tubing for a small exhaust manifold for a model engine.
Has anyone used the Technoweld process?

Allan

[oldtiffie]

Allan.

Any help?

http://www.google.com.au/search?hl=e...oq=techno-weld

Looks interesting.

[Allan Waterfall]

Thanks,I'd done the Google bit,just need to know any actual experience with it.

Allan

[Alan in Oz]

Allan,
Have tried the product some years ago and found it difficult to get a good bond on anything except the Coke cans the demonstrator was using. Real world the aluminium base material seemed to melt first, used the same propane torch as in demo. YMMV though and I'm sure experience played a fair part in my failure, haven't tried the stuff since.

[PTSideshow]

If its the same stuff they sell here, as the aluminum brazing/soldering/weld rod. And it appears to be, clean,clean clean. Clean the area with stainless steel wire brush ONLY (oxides form with a regular ferrous one) and use the stainless steel scraper/pusher to move the oxide that forms as soon as it melts from the filler rod.
Our instructions suggest using an old stainless fork with 3 of the tines bent out of the way. I use a flattened TIG rod. I have used it for years and have been happy with the results on thin stuff.
The most two most important things are clean the items being joined and practice! read the last section about the use of the abrading tool.

Here is the instruction sheets:

[oldtiffie]

Just as a suggestion.

Why not consider the "Cobra" (previoussly "Dillon") torch.

Check the links and videos - you may be quite pleasantly surprised.

http://www.cobratorches.com/1.html?sm=15933

http://amweld.com.au/index.htm

http://www.google.com.au/search?hl=e...=6&oq=cobra+to

[JCHannum]

Glen has it. It takes a bit of practice, but it can be done. On the small parts and thin sections usually involved, an O/A torch is way too hot and a propane torch will work just fine.

[S_J_H]

I have used it quite a bit over the years. It is not as easy to use as they make it sound. I used to use it with sheet 5052 aluminum and made airbox plenums for cars.
I found over the years the joints would crack. But it does have it's uses and it does work.
Steve

[madman]

This stuff works great. use Propane torch and a stainless steel wire bruch to clean fitted surfaces before welding. I also welded or soldered a broken white metal part successfully for some old guy in my shop with it.

[aboard_epsilon]

Just as a suggestion.

Why not consider the "Cobra" (previoussly "Dillon") torch.

Check the links and videos - you may be quite pleasantly surprised.

http://www.cobratorches.com/1.html?sm=15933

http://amweld.com.au/index.htm

http://www.google.com.au/search?hl=e...=6&oq=cobra+to

i would have thought coming from aus that you would be recomending the Henrob one .

Allan search you tube with the words Henrob

all the best.markj