[Robotgroup] Video on making a triode

[Don Colbath]

Definitly cool!  Noticed the annealing process with the yellow sooty flame
between each step to keep stresses at bay.  Same process is used when
working aircraft sheet aluminum.  Also noticed when they were showing the
blue tube base (coulotte) they were doing their own injection molding.
Projects I want to do, with a little help from Rick is building an injection
moldeing and a vacuum form machine.

RoboDon