[RainsFire]

I was cruising youtube, and saw quite a few video's where a person would insert an item, which would be brought to yellow heat in a few seconds.. Is there a down side to using something like this for blacksmithing purposes? would the enviorment be oxidizing? carburizing? are there any dangers surrounding it, and how hard would it be to craft up a small one? I dont really understand it fully, but it sounds like they are just running a current through copper tubing, which creates a magnetic feild thus heating the metal somehow..

so ya, any possibilities?