|
IIRC shadow masks aren't made by machining but a photo etching system, remember RCA spent years and millions of dollars to make the machines capable of making 28800 tiny holes at a few microns accuracy. The face plates of crt's are cast glass with the alignment pegs cast in. You could check with Corning glass and see how much it would cost to have 1000 face plates and bells made on a low production run, but i would bet it would over 400 bucks apiece. In Huntsville Alabama, Western Electric is making new 300b electron tubes which are about 1/100 of the difficulty of a color crt. I think the cost is around 80 bucks per tube to make, before profit. I could be wrong, Logan
|