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Old 01-13-2007, 02:35 PM
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Fred Fred is offline
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Join Date: Nov 2006
Location: 3rd planet, tiny solar system
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Quote:
Originally Posted by BiLLy bOb View Post
...I guess i will get some brass the next time i am at the hobby shop and see if i have any better luck with it. ...
Hi BiLLy bOb,

make sure you buy "free machining /cutting brass " (DIN EN 17660 / MS58 or similar). How powerful is your soldering iron? Some folks love acid flux for soldering brass frames; I am quite happy with resin flux. You may want to add (resin) flux if you believe there is not enough in the core of whatever solder you use. Depending on your preference, use liberal pre-tinning.

Remember that brass conducts heat very well. Preheating the frame (e.g. on an electric range or hotplate) works wonders. There is another downside to the superb heat conductivity of brass: Not only does the heat dissappear from the spot you want to solder, but this heat can melt the solder in a nearby finished joint. You may want to cool nearby completed joints with some wet kitchen paper.

I have never tried cement for building an entire frame, although I use cement quite often for other joints (e.g. for attaching a motor -- Stabilit Express is just great for that purpose).

Good luck,

Fred
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