deskthority

@billdrom and others: thanks for sharing! Indeed, one needs to print them at the original size (exactly as in the EPS). The 181x181mm size is the minimal sheet size at Ponoko that will fit the EPS file; apologies for failing to explain this initially.

Glad it worked out for you!

$30, wow, I'd definitely buy a few as well!

I experimented with different options, and found that the best fit is when the sizes match exactly. So in your case you'd need collars with 8.1x8.1mm opening for the keyboard and 8.2x8.2mm for the keypad. Making them a tighter fit will just result in keycaps being too hard to put onto the stem.

Yes, I ordered mine at Ponoko.

caseybea , just measure one side of the rectangle (the stem) with a caliper, and make the collars with the same size of the opening. In my case, the outer size of the stem was 8.2x8.2mm on each side, and this is exactly how the inner rectangle hole of the collar measures for me. You may want to ...

Nicely done! Just the sort of thing that ought to be well archived on DT per the recent thread on the future of DT.

Do you think it makes sense to add the link to this topic on Hi-Tek switch wiki page?
https://deskthority.net/wiki/Hi-Tek_High_Profile

I could add it, just don't know what the ...

Just a quick update: after picking the right size, I ordered a full set of laser-cut collars for all the keys, and had the keyboard fully restored. The process of installing keycaps and collars turned out to be a very easy one, and I was spending just 10 seconds per key (to put the collar and ...

I don't mind sharing them for free.

Designs I made are suitable to be printed on ponoko.com. When printing, choose either white or black Delrin plastic, 0.8mm thick, P1 size sheet (181x181mm).

Option 1: 64 collars on one 181x181mm sheet:
https://www.dropbox.com/s/zj1z1xpnik11jbr/hi-tek-switch ...

Printing all of the new stems is quite an effort! A few days ago I did my take on reparing Hi-Tek switches, which, fortunately, didn't require any de-soldering and using any donor keyboards: workshop-f7/a-solution-for-cracked-hi-t ... 20317.html

I'm restoring my Hazeltine terminal, which has Hi-Tek High Profile keys which are known to be fragile. And I think I've found a good solution on making these cracked keys work with a small modification.

RiDAf12mRTyE1TaNFA3GEg.jpeg

Here I posted my illustrated story on how to fix them: https ...

@UncleFan The grey switch is under the "LOCK" key. Since this keyboard made for a very specific use case (for a chromatography lab equipment) it could originally mean anything. This key physically keeps itself in a pressed state, so in my version of keyboard layout I'm using it is a modifier key ...

The terminal itself looks like this (this is not my picture, as I currently have it disassembled for restoration):



More pictures here.

Hey folks, I scored this awesome terminal at flea market the other day and wanted to share some pictures with the community. I'm no expert in keyboards or switches, but after some research it looks like what this keyboard has is Cherry M7 linear switches with doubleshot SA keycaps. All keys have a T ...