Controlling heating elements in a heat tunnel

If 212 degrees (F) isn't enough, you could use molten metal in a temperature-controlled pot. There are several metals (e.g. Cerro-bend, Cerro-safe) that melt below 212F. They contain no lead so they're not hazardous.

dforeman fired this volley in news: snipped-for-privacy@4ax.com:

And often cadmium, which is. There is mostly tin and bismuth in there, but there are other metals in there to tune the melting point; some are toxic to a high degree.

Lloyd

First, let me say that I told ya wrong: some of these low melting point alloys really do contain lead, cadmium or both.

That said, there are low melting point alloys that contain neither lead nor cadmium, for those who have particular sensitivity to or fear of those elements. Please see, e.g.,

Regard, please, that at these low temperatures the vapor pressures of lead and cadmium are m>dforeman fired this volley in

Don Foreman fired this volley in news: snipped-for-privacy@4ax.com:

Yep. I was mentioning that because they are also hand-to-mouth ingestion hazards. One needs to work clean. CerroTru contains neither, but doesn't melt at as quite a low temp as some of the others. Lloyd