Gosh, you could be right about the hyper thing I debated using the term as I wasn't sure which expressed the concept right, sort of like trying to remember that .9v means rich and .1v lean which gives 100% duty cycle or 0%.

Up or down, eutectic fractional cooling is the point after thirty years I forget the non necessary directions.

I don't think I have forgot the important things so I will re affirm my choice of alloying material SiO2. tHe point of having glass cylinder walls (SiO2) was they were hard. Do you suppose elemental Si to have those properties.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician