Key cap dimensions/sizing

The_Beast

08 Jul 2012, 05:14

Does anyone have autocad, inventor, pdf..... plans/dimensions for key caps? Outside dimensions aren't super important right now (they might later), I'm more interested in the stem and it's placement.



Thanks

asdf

08 Jul 2012, 05:27

still looking but there's this in the mean time http://www.cherrycorp.com/english/switches/key/mx.htm

ripster

08 Jul 2012, 05:41

Yeah, I posted slider dimensions at Geekhack.

Or do you mean keycap cruciform dimensions?

I got those too.

Why are you asking?

The_Beast

08 Jul 2012, 07:47

All the dimensions of a key cap would be helpful. Inside, outside, cruciform whatever I can get. Tollerance would also be pretty helpful.

Why? I'm thinking of getting/buying/building a CNC router/mill and custom caps would be pretty tight to mill out.

User avatar
damorgue

08 Jul 2012, 10:50

Mills small enough to cut the + in the stem are expensive and break often. A rule of thumb is that the length of the tool should not exceed 4*the diameter. I have some step-files for cnc if you want them later on.
Last edited by damorgue on 08 Jul 2012, 17:32, edited 1 time in total.

ripster

08 Jul 2012, 16:07

Yeah, the Zinc Duckies were crap.
Image

Anyhoo I back up images because Geekhack does not and SOMEBODY has to do it.
Image

Apologies for Signature Plastics using Imperial Measurements. They are in the boonies in Washington state among the Sasquatches and Survivalists.

Other piece of trivia is the Cherry MX SLIDER cruciform is thicker in the horizontal. In other words when pulling keys wiggle Left/Right for maximum efficiency. Wiggle. Wiggle. Wiggle.

The_Beast

08 Jul 2012, 22:41

damorgue wrote:Mills small enough to cut the + in the stem are expensive and break often. A rule of thumb is that the length of the tool should not exceed 4*the diameter. I have some step-files for cnc if you want them later on.
I was thinking of milling stabilized wood, which I've heard is very similar to milling plastic. As for milling the stem, I was thinking many light passes at a slowish feed rate.
ripster wrote:Yeah, the Zinc Duckies were crap.
Image

Anyhoo I back up images because Geekhack does not and SOMEBODY has to do it.
Image

Apologies for Signature Plastics using Imperial Measurements. They are in the boonies in Washington state among the Sasquatches and Survivalists.

Other piece of trivia is the Cherry MX SLIDER cruciform is thicker in the horizontal. In other words when pulling keys wiggle Left/Right for maximum efficiency. Wiggle. Wiggle. Wiggle.
Thanks rip

geotang

08 Jul 2012, 23:06

Wooden keycaps :o
Looking forward to how well they turn out.

ripster

08 Jul 2012, 23:42

PieceOcake.

Sanding solves all mistakes.

The_Beast

09 Jul 2012, 00:47

geotang wrote:Wooden keycaps :o
Looking forward to how well they turn out.
Don't get too excited, it's all just vaporware right now

ripster wrote:PieceOcake.

Sanding solves all mistakes.
Do you do any wood working? Sanding just masks mistakes

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