Recently I had a revelation concerning a source for jet prickers. Someone had made a pricker in another post, but the source of the fine wire??? I had suggested the same tool required for cleaning oxy-acetylene torchs contain numerous sizes with smooth tips before the files engage. The revelation occured when I was considering a new string for my guitar. Although my classical guitar uses Nylon strings, steel string guitars have various diameters depending on the gauge of the string. Of course bronze wound is not acceptable, but within are steel wire, and usually the high E, B and G strings are solid wire. Certainly these should be enough variety for all the cleaning prickers for the entire stove population, but if a size is not found perhaps someone with a piano company would have an abundant supply of used or broken strings??? Has anyone tried this yet??