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Old 19th Jun 2021, 12:03 pm   #1
Join Date: Jan 2007
Location: Dorridge, West Midlands, UK.
Posts: 1,239
Default 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:-
Chris Wood
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Old 20th Jun 2021, 7:18 am   #2
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Join Date: Aug 2010
Location: Bristol, UK
Posts: 2,421
Default 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:

recursive loop: see recursive loop

Last edited by mole42uk; 20th Jun 2021 at 7:23 am.
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Old 3rd Jul 2021, 8:40 am   #3
Malcolm T
Join Date: Dec 2018
Location: Lugo, Spain
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Default Re: Original Moulds found for Tek Scope Tubes

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