Original Moulds found for Tek Scope Tubes
 

Whilst clearing out Building 13 on the Tektronix campus at Beaverton they came acros a disused store containing the moulds for making the famous ceramic scope tubes.
More here:-
https://vintagetek.org/15109-2/

Re: Original Moulds found for Tek Scope Tubes
 

Fascinating! I’d never thought that CRT’s were moulded in ceramic but it makes sense. I’ve seen film of the making of valves which seem to use pre-formed glass tubes but I suppose precise display tubes needed different parameters. Perhaps ceramic is the only way to achieve perfection in ‘scope tubes?

There’s a YouTube of the process here: https://youtu.be/G0Dci5RPe94

Re: Original Moulds found for Tek Scope Tubes
 

Hope they keep them for possible future use , who knows .