Tempering sterling silver

I wish to temper a length of sterling silver for a bangle. It needs to have some spring to it as it closes round the wrist with a hook one end and an eye the other end. I have read up on Google how to do this but the temperatures quoted are higher than domestic ovens by about 100 c. Anyone have any tips? I do not want to hammer the silver as I want a highly polished finish. I attach a photo of the design photoed of one I saw on a friends wrist…..https://uploads.tapatalk-cdn.com/202...f1d769fedf.jpg
There was considerable strength and spring to the piece and it was hallmarked sterling silver.
David


Sent from my iPad using Tapatalk

Use a torch and a infrared/ LASER thermometer, I have had success with Argentium in my domestic oven.

Thanks. But what is an infrared /Laser thermometer please?


Sent from my iPad using Tapatalk

Ah , just looked them up…..any advice on type etc please.


Sent from my iPad using Tapatalk

One like this https://www.amazon.com.au/Thermomete.../dp/B07LBNWQXV
I have one of these and use it for all manner of things comes with the handy stick thermometer

Thanks so much…….I will order one now….good old Amazon Prime!


Sent from my iPad using Tapatalk