Search found 5 matches

by caseybea
14 Feb 2019, 06:11
Forum: Workshop
Topic: A solution for cracked Hi-Tek switches (VT100, Hazeltine, HP, etc.)
Replies: 22
Views: 26685

Re: A solution for cracked Hi-Tek switches (VT100, Hazeltine, HP, etc.)

I ended up just gluing the collars in the proper position with loctite plastic bonding system. A pain to do, but it actually did work. While the collars weren't exactly perfect for some keys, once held in place they still do the job keeping the crack from opening, and voila- no sticky keys.

I ...
by caseybea
06 Feb 2019, 06:12
Forum: Workshop
Topic: A solution for cracked Hi-Tek switches (VT100, Hazeltine, HP, etc.)
Replies: 22
Views: 26685

Re: A solution for cracked Hi-Tek switches (VT100, Hazeltine, HP, etc.)

The dec VT100 hitek posts (white, main keyboard) seem to be averaging 8.1mm
The black hitek posts (keypad) seem to be averaging 8.2mm
The inner width of my collars seems to be about 8.25mm

Looks like I have to glue them.

There appears to be some variance in the hi-tek posts (white vs black).

The ...
by caseybea
05 Feb 2019, 23:52
Forum: Workshop
Topic: A solution for cracked Hi-Tek switches (VT100, Hazeltine, HP, etc.)
Replies: 22
Views: 26685

Re: A solution for cracked Hi-Tek switches (VT100, Hazeltine, HP, etc.)

Did you print YOURS at ponoko?

Sorry, got distracted from making measurements. Hopefully tonight.

I'm also going to experiment with the glue. I ordered a 2-part plastic bonding system (loctite), and will experiment with one key. The collars (once set) DO seem to work, but without any adhesive, at ...
by caseybea
03 Feb 2019, 02:22
Forum: Workshop
Topic: A solution for cracked Hi-Tek switches (VT100, Hazeltine, HP, etc.)
Replies: 22
Views: 26685

Re: A solution for cracked Hi-Tek switches (VT100, Hazeltine, HP, etc.)

What are the exact measurements of the collars supposed to be? Going to measure what I have as soon as i can find my measuring tools
by caseybea
02 Feb 2019, 05:33
Forum: Workshop
Topic: A solution for cracked Hi-Tek switches (VT100, Hazeltine, HP, etc.)
Replies: 22
Views: 26685

Re: A solution for cracked Hi-Tek switches (VT100, Hazeltine, HP, etc.)

Well.... CRAP.

I have a vintage VT100 I literally pulled back into service last week, and came across this post!

Aha! Cool solution. But, I have a problem.

It seems that EITHER:
(A) the hi-tek posts on the VT100 are ever so smaller by a hair than on the hazletine terminal,
OR
(B) There's a flaw ...

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