To: Vinnie
WTF were you doing with HF??? Yikes!
51 posted on
12/08/2018 8:20:38 AM PST by
grey_whiskers
(The opinions are solely those of the author and are subject to change without notice.)
To: grey_whiskers
Brazing refrigerant systems. Residual refrigerant burning as you’re brazing refrigerant lines.
Hydrochlorofluorocarbons R-22, very common in household AC(going away though),
Hydrofluorocarbons R-410a,R-134, newer refrigerants.
58 posted on
12/08/2018 11:14:46 AM PST by
Vinnie
To: grey_whiskers
Me? Etching SiO2 and Si3N4, and when mixed with nitric and ascetic acid, Si...
63 posted on
12/09/2018 8:05:08 AM PST by
null and void
(Socialist Worker's Party. If they ever get elected, you'll work and they'll party.)
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