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RE: RE: Aluminizing Mirrors.....
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Frank O'Shannassy on July 29, 2000 18:15:46 UTC |
High vacuum equipment is fussy stuff. I built a home aluminizing vacuum system in the late 1950s, large enough for my 12.5inch mirror. You need a steel baseplate, ground flat, a molecular (langmuir-type or other) pump backed by a roughing (rotary) vacum pump. You also need a bell jar (Pyrex, thick wall) with a neoprene gasket. Also, you can make a reasonably good pressure indicator by runnng high-voltage intot he chaber. When you get a plasma keep pmping until the plasma goes out, then you rare getting close tot he vacum needed to aluminize. Typically, you hang pure aluminum wire on a tungste coil ad boil it off with low voltage hi amp current. You can make a step-down transformer.
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