buckling spring with cherry on top

This would be ALPHA-1, just dremel work + epoxy glue, but the result is promising. Next step would be 3d print. Final step would be production...

Enjoy.

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matt3o
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Unread post09 Oct 2014, 12:09

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Nice! Very promising. All those Cherry MX novelty keycaps that people have could find a new home on a sweet Buckling spring board.
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Unread post09 Oct 2014, 12:13

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Very nice, that would be so great to have. How much higher than a normal BS key does the top of the cap come out actually?
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Unread post09 Oct 2014, 12:31

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Indeed, looks tall. Can we see it when pressed down?

When considering this before, I've also worried about the whole curved backplate issue. Caps will all be packed closer together the taller they get.
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Unread post09 Oct 2014, 12:44

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the keycap should be almost at the same height of the original one, maybe a pinch higher, but I could dig a little deeper into the stem and have it flush with the original.

keycaps could be tilted slightly if they hit each other. I don't know yet since I sold my last buckling few months ago. I find them once in while in a junk yard near here (for free)
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Unread post09 Oct 2014, 13:03

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interest alps version :P
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Unread post09 Oct 2014, 14:54

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Nuum wrote:Nice! Very promising. All those Cherry MX novelty keycaps that people have could find a new home on a sweet Buckling spring board.

Yes, this would be a good use for all those non-sculpted Cherry keycaps which are annoyingly pervasive across group buys. :roll:
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Unread post09 Oct 2014, 18:26

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Like, oh, DSA? Hmm… a Kishsaver in Granite!
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Unread post09 Oct 2014, 18:32

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Muirium wrote: When considering this before, I've also worried about the whole curved backplate issue. Caps will all be packed closer together the taller they get.

That's what i also thought instantly - i had this issue with not correctly seated keycaps, and also when i did my first bolt mod some keys were touching each other. As i found out it was rather a beginners mistake, but the caps are really packed close together.

The Model M caps i measured right now are on the bottom about 18,5 x 19 mm.
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Unread post09 Oct 2014, 19:05

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I wanted to thank madhias who volunteered his Model M to the cause. I received the keyboard few days ago and I'm ready to 3d print the beta 1 of the slider :) Crossing fingers, let me know if you spot any issue.

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Unread post24 Oct 2014, 18:56

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Beaut!

How deep is the MX "socket"?
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Unread post24 Oct 2014, 19:19

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4.5mm

I think I should make the hole slightly bigger to better fit novelties
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Unread post24 Oct 2014, 19:21

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Probably a good idea.

How many are you prototyping? And are you looking for testers? If they work well, these would be a bigger deal than MX on Topre for me and all my IBMs…
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Unread post24 Oct 2014, 19:29

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Maybe also make the "platform" smaller? Novelties seem to have a bit too thick walls.
Is the platform really necessary? I guess it helps with stability?
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Unread post24 Oct 2014, 19:30

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If it can fit Mr. Beardsmore's wingnut, the chances are good it'll fit anything! That's one unique cap, I've found.
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Unread post24 Oct 2014, 19:38

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the platform actually stops the key. The barrel hits the platform and stops the key travel. I believe it's pretty important, but I could do a version without it to see if it works anyway (in that case the barrel would hit the keycap itself.

I'll probably run a small batch of 20. I'll send some samples to selected parties ;)
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Unread post24 Oct 2014, 20:35

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I already dream of vader on one of my ibms...
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Unread post24 Oct 2014, 20:41

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It will be very fascinating to try different caps on BS keyboards!

Without the platform you probably would have to use glue? A "you have to have balls" sliders edition?
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Unread post24 Oct 2014, 20:44

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I don't know how it would feel without that platform. I don't think you need glue though :)
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Unread post24 Oct 2014, 22:43

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Really looking forward to this. I wonder, now this is probably just crazy, if damping would make any sense whatsoever with buckling spring? You know what I'm thinking: something like and o ring on the way down and a Type-S Topre collar for the upstroke. Does this make any sense? I am probably just overthinking this, believe it or not…
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Unread post25 Oct 2014, 11:11

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noise from BS comes from so many places that I wouldn't even know where to start from silencing it :) Definitely a buffer under the top platform would be a nice start
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Unread post25 Oct 2014, 11:35

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Annotated image: Blue is downstroke, red is upstroke.

Dampers.png


I think damping the upstroke would be interesting, as I like the effect it has on Alps and Topre. Perhaps buckling spring would sound more snappy with damped clacks? I need to think about that.
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Unread post25 Oct 2014, 11:49

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Damping the upstroke is more complicated I believe, there must be some "slap" from the flipper contributing to the noise
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Unread post25 Oct 2014, 11:56

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That's true. And we shouldn't forget about our good friend the spring! I am intrigued by all the different moving parts involved, though.
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Unread post25 Oct 2014, 11:59

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the barrel hits the top platform only. The small step you pointed with the second arrow is just for reinforcement.

The upstroke needs to be dampened from the inside of the keyboard I think (and not from the slider itself). But noise also comes from the spring and the BS "pivot plate".
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Unread post25 Oct 2014, 12:03

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This could be major. Looking forward to further updates!
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Unread post25 Oct 2014, 18:43

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order placed. I'll let you know in 10 days or so.
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Unread post27 Oct 2014, 15:47

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Another item for the list: Things That Shipped Before Round 5.
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Unread post27 Oct 2014, 15:50

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matt3o wrote:order placed. I'll let you know in 10 days or so.

Who is doing the printing?
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shapeways
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