I have some 1/4" wide nickel & silver plated wire and I want to make a swirling tool with it. Will either of these wires cause an immediate or lasting reaction to my soap that I am using it in?
In my research many years ago, I got some nickel plated cookie cutters and wondered the same thing. Apparently (and I'm not sure I still have the document) but nickel is even better to use than stainless steal, so I think you will be okay with that, but I am not sure about the silver.
My husband made my hanger swirl tool out of Regular Cold Roll Steel and it works wonderfully. I do not really know what that is but you might Todd. He did say it was not stainless.
Do you mean "nickel silver"? In other words, what's called German silver?
If so, it's a copper alloy -- copper + nickel -- and I'd avoid using that with soap. Copper contamination is really not good for soap -- it can trigger rancidity very quickly and easily.
A former SMF member "Topofmurrayhill" used an edge planer with a brass (copper + tin) fence to trim some soap bars. The exact places where the fence touched the soap became rancid. It was an impressive (if unintentional) experiment.