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<blockquote data-quote="JohnEJanowitz" data-source="post: 4531442" data-attributes="member: 584636">I had a customer run me through a bunch of hoops because low carbon steel wasn&#039;t &quot;good enough&quot; for what he wanted to do.&nbsp; He wanted something better.&nbsp; Material wise there are some Iron/Cobalt alloys like the Carpenter Hiperco50 and Hiperco27 that on paper look good.&nbsp; The 50 isn&#039;t machinable, and the 27 is ridiculously expensive.&nbsp; I looked into doing just the poles out of it.&nbsp; For 2&quot; diameter bar stock it&#039;s around $213 per INCH!&nbsp; Crazy stuff.Speaking of crazy materials... on the DIYaudio forum there was a debate about VC wire that is somewhat interesting.&nbsp; People claimed that none of the VC wires used today are idea as they all have rising resistance with heat.&nbsp; Apparently nobody should buy another woofer from anyone until development is done on a new imaginary, ideal, perfect VC material that doesn&#039;t have resistive rise with heat.&nbsp; hahaJohn</blockquote>

[QUOTE="JohnEJanowitz, post: 4531442, member: 584636"] I had a customer run me through a bunch of hoops because low carbon steel wasn't "good enough" for what he wanted to do. He wanted something better. Material wise there are some Iron/Cobalt alloys like the Carpenter Hiperco50 and Hiperco27 that on paper look good. The 50 isn't machinable, and the 27 is ridiculously expensive. I looked into doing just the poles out of it. For 2" diameter bar stock it's around $213 per INCH! Crazy stuff. Speaking of crazy materials... on the DIYaudio forum there was a debate about VC wire that is somewhat interesting. People claimed that none of the VC wires used today are idea as they all have rising resistance with heat. Apparently nobody should buy another woofer from anyone until development is done on a new imaginary, ideal, perfect VC material that doesn't have resistive rise with heat. haha John [/QUOTE]

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