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Lapidary / Gemstone Community Forum
December 11, 2018, 05:15:18 pm
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HELP! maybe a dumb solder question...

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Author Topic: HELP! maybe a dumb solder question...  (Read 536 times)
Goldsmithy
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« Reply #15 on: July 03, 2014, 07:37:38 pm »

There's a lot to what you say, Debbie. Torches are tools and no tool is right for every job. Each type of torch produces a different intensity of heat. I have just about every type of torch there is, and can solder with each. These days, for the type of work I am doing, I use a hand held butane torch. Why? It's very easy to use. It produces a soft, gentle heat that will get small pieces up to the flow point of the solder quickly.

I don't think I have ever met anyone who was not plagued by firescale, myself included.  Especially on bigger pieces. Pripps flux ( which is not really a flux, but a metal coating) is very useful in holding firescale at bay.
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rockjunquie
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« Reply #16 on: July 03, 2014, 09:12:25 pm »

Thanks for all the great input.

I am using an acetylene/air torch by Smith. I had used a butane by Blazer with no issues, but they were smaller pieces.

My silversmithing is for the winter. Right now I am more focused on cabbing. But, when I get back to the torch, I am going to try the pripp's and the firescoff I bought.

I have a million designs in my head, but I am so afraid of firescale now that it really holds me back. :(
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skystone
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« Reply #17 on: July 03, 2014, 10:48:15 pm »

"i get this also, i ended up soaking in the flux, reheating the whole piece and quenching in the flux again."

I assume you mean the pickle not flux? The only thing I do for firescale is buff first with Tripoi on a firm buff. It comes off with a bit of work. I'll use a very fine rubberized abrasive wheel or bullet in my Foredom to get in tight spots or right up against a bezel or other piece. I think sanding takes off too much material but some do it. Best thing is to prevent it in the first place. I use boric acid (powdered) disolved in alcohol, flood the back side & burn off the alcohol. Leaves a protective coating from ozidation that comes off in the pickle. The side I'm going to solder I coat completely with the fulx (I use only handy flux). Keeps fire scale to a min.
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