Fusing Mild Steel with Silver Solder 

You're very welcome, I'm so pleased that you found it useful.

I'm so glad you found this helpful, do let me know how you get on.

That is a very good question, and a very important question because no, it is a different kind of flux. Precious metal soldiers require the use of either borax as flux, or alternatively as I'm using in the video something called Auflux, which is a purpose made liquid flux that you can put on with a small paintbrush used with precious metals. If you Google it, you'll find it not hard to track down, a number of vendors for selling it on eBay for example, and it isn't particularly expensive. Unless you're doing a hell of a lot of silver soldering all the time, it wouldn't surprise me if you found one fluid ounce to be a more or less lifetime supply.

I use what is called silver hard solder, which is a hallmark standard silver solder, normally used for bonding sterling silver, although as you can see, it's more versatile than that.

I think you'll find that what they're talking about in your course is using silver solders on base metal, costume jewellery. The reason that would be a problem is that generally, costume Jewellery is made from low melting point metals such as zinc or pewter, with a much lower melting point then silver soldiers. But if you're using it on a known metal, such as brass or mild steel, it works a treat, providing you're using the right type of high temperature flux.

Thank you! @@Jeff.Lippman.Presents

Just make sure that you drain the system of water before you start.

If your brazing power is predominantly borax, I would imagine that would work. The main thing to remember is that precious metal solders are expected to work at temperatures north of seven hundred celsius at a minimum. I would be very interested to know how well your brazing power holds up.

I'm so glad you enjoyed this. If you have any other questions, feel free to get in touch.

My pleasure 👍