Silver solder wire and flux question

[bill70j]

For simple jobs that require low temp silver solder, I use Harris Stay-Brite solder and Stay-Clean flux. Works well at low temps you can produce with a simple butane torch. I buy the 1# spool and big bottle of flux but there is a small kit you can get to try it out. I searched for Amazon South Africa and came up with this: https://www.amazon.com/STA-BRITE-Si...=1548787211&sr=8-7&keywords=harris+stay+brite

I also use the low temp Stay-Brite and Stay-Clean for soldering parts with a tight fit, and I also use Stay-Brite#8 where the connections are "sloppy." The #8 has a wider melting point range, which allows it to fill gaps more effectively. But it has a higher silver content so is much more expensive.

For stronger, higher temperature silver soldering, I also use the Safety-Silv and Stay-Silv with good success.

 

[kd4gij]

We always used boric acid from the local drug store mixed with water. for silver and gold solidering.

 

[whitmore]

For simple jobs that require low temp silver solder, I use Harris Stay-Brite solder

That's a good plumbing solder (higher strength than common 'lead free' Sn-Sb solder) and it's what I use for copper pipe
joining, but it isn't the hard-solder product you'd want for strong repairs. Jewelry-making 'easy' or 'medium' silver
solder, available in ounce sizes, is mainly (90%? ) silver, Stay-Brite is more like (0.5%?) silver, mainly tin.

Welding-supplies 'silver solder' is mainly copper, would't be right for jewelry, but is makes good brazed joints.

 

[hman]

Look for "jewelery supply".
Common product name will "easyflow silver solder" ( https://www.amazon.com/Silver-Solder-Easy-Flow-Foot/dp/B00F1ODTUS - i didn't buy from them and don't know if they deliver to SA)
Beware - some shops advertise common electronics solder as "silver solder".

Lower down on the same Amazon page, in the "you might also want this" section, is this flux:
https://www.amazon.com/Handy-Flux-O...A4V2YETA5A2&psc=1&refRID=740W2S020A4V2YETA5A2

Probably the same thing as Stay-silv.

+1 on the fact that Stay Brite is a "soft" solder, even though it does contain silver (~5% IIRC). I guess it's correctly called "silver bearing solder." Anyway, I've used it and Stay Clean quite a bit, and love them. But it's definitely not a brazing or "silver soldering" alloy.

 

[MSBriggs]

Solder versus braze are commonly defined as a melting point of 450 degrees C. If confused whether a silver alloy is a solder or braze, check the melting temperature. Re the original question about brazing fluxes, this webpage will show you Harris products for brazing: http://www.harrisproductsgroup.com/en/Products/Alloys/Brazing.aspx. Of this companies products, the general purpose one is the white flux, "Stay-Silv White Flux". The "Stay-Silv Black Flux" is designed to function to higher temperatures, or for longer heating. Other companies have very similar products.

 

[Guv]

I bought silver solder flux from Preweld supplies in Pretoria and the plain silversolder rods at Cosmos welding supplies in silverton also in Pretoria . I am sure that you would source these items at a speciality welding supplies in Cape Town


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[Suzuki4evr]

I bought silver solder flux from Preweld supplies in Pretoria and the plain silversolder rods at Cosmos welding supplies in silverton also in Pretoria . I am sure that you would source these items at a speciality welding supplies in Cape Town View attachment 286298


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Thank you Guv. I will try the Preweld in Paarl. I am in Wellington 14km away.