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Message: <blockquote data-quote="dennishoddy" data-source="post: 3553580" data-attributes="member: 5412">Thanks for the advice. I have a thermocouple attached to an industrial temperature controller that will go up to 3000 degrees F. It will control any number of instruments to maintain temp, but I've opted to use the adjustable propane regulator manually. Keep it simple is my mantra. <img src="/images/smilies/biggrin.png"  class="smilie" loading="lazy" alt=":D" title="Big Grin    :D" data-shortname=":D" />Explain to me why I need flux? I understand the need for flux when soldering on circuit boards, but making ingots?Still learning, lots of questions.</blockquote>