group buy for homebrew CPUs?
cclist at sydex.com
Sat Aug 12 16:47:52 CDT 2006
On 8/12/2006 at 2:04 PM Don wrote:
>No *kids*, eh, Chuck? ;) <wicked grin>
In a steel mill? These were big 3- or 4-foot long Pt/Pt+10% Rh
thermocouples. The wire was threaded through ceramic beats, then placed
inside of a ceramic tube, then placed in a larger grey-black outer tube
(SiC, maybe?). Used for temperature control in soaking-pit furnaces in the
blooming mill. That particular summer taught me how much dry heat a human
could take in short doses--the next year, a co-worker collapsed and died
while changing a thermocouple.
Anyway, the thermocouples got bumped during loading and unloading the
furnaces and were broken pretty often. When repairing a thermocouple, on
of the goals was to butt-weld any wire pieces together. A job that I
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