On 13-01-29 02:03 AM, Michel van der Meij wrote:
That is really cool stuff!
Maybe one day it is possible/affordable to use a 3D printer to print
these cathodes and grids using a conductive plastic of some sort.
I would expect that the plastic would outgas rather easily, and would
not survive the stage where you use an RF heater to drive gas off the parts.
BUT, You might be able to use a 3D printer to make a model for the Lost
wax casting process. (often used to make Jewelry) The plastic part is
made, and covered in Clay, then the Plastic is burned out and metal is
put in the mold. You then smash the mold and get out a precise metal part.
(my guess is that commercial Nixie tube had the parts stamped out in a
punch and die set. A pricy bit of tooling but simple to make vast
quantities of sharp edged parts)
As far as the spacers, those could be molded in Ceramic Clay and fired
in a Kiln. The mold could be made in Silicon or similar, again the
prototype could be made on a 3D printer, or just turned on a lathe.
--
Charles MacDonald Stittsville Ontario
cm...@zeusprune.ca Just Beyond the Fringe
http://Charles.MacDonald.org/tubes
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