Author Topic: Bakeneko 60 - Open source gasket mount keyboard  (Read 3097 times)

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Offline kkatano

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Bakeneko 60 - Open source gasket mount keyboard
« on: Sun, 05 July 2020, 05:38:35 »
This project is a special homage to the OTD 356 Mini and TGR x Singa UNIKORN 60. I plan to make a 60% keyboard with a gasket mount and CNC aluminum unibody case. The plate is fixed to the case only by O-ring pressure, like UNIKORN.

I also want to make an acrylic sandwich board as a prototype or low cost version. That's also because I just like acrylic. I don't know how difficult this challenge is, but I will try it just for fun.

Has anyone ever tried designing a DIY keyboard with an O-ring gasket mount? I want to hear about your experience and share the mine.

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I start by testing some variations of O-rings.
I'll go little by little steadily.

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Offline Applet

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Re: Bakeneko 60 - Open source gasket mount keyboard
« Reply #1 on: Sun, 05 July 2020, 09:02:55 »
Very interesting, excited to see how the case turns out  ;D Thanks for keeping it open source! :thumb:

Online LightningXI

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Re: Bakeneko 60 - Open source gasket mount keyboard
« Reply #2 on: Sun, 05 July 2020, 14:51:49 »
Slow and steady wins the race. Best of luck!

Offline kkatano

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Re: Bakeneko 60 - Open source gasket mount keyboard
« Reply #3 on: Fri, 10 July 2020, 07:14:13 »
Applet, LightningXI, Thank you for your reply!

I have started designing the case. The first version is likely to be as simple as KBDfans Tofu.

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And I ordered an acrylic case to check the concept and fit of the O-ring mount. When it arrives, test the case dimensions and O-ring combination.

Offline kkatano

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Re: Bakeneko 60 - Open source gasket mount keyboard
« Reply #4 on: Sun, 12 July 2020, 01:44:50 »
I did some testing with a 3D printed case. Due to the size of my 3D printer, I split the case into two parts. I checked if the O-ring gasket mount fits this case. It worked, as the picture below shows. It was fixed firmly without screwing between the PCB and the case. The PCB and plate will not drop when the case is turned upside down and rocked.

The PCB I designed for this project haven't been manufactured yet, so I used my own DZ60 and kbdfans aluminum plates. The actual PCB has a notch for the case to contact the O-ring, but the DZ60 does not. So this test is not perfect. Once the PCB is manufactured, I need to make sure that there is enough space between the PCB and the case. However, it was the best thing that it was possible to confirm that the plate and PCB could be fixed without using the plate only by the pressure of the O-ring.

I will update the detailed sizes of the O-rings and the results of trying each size later.

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« Last Edit: Sun, 12 July 2020, 01:52:39 by kkatano »

Offline immaphantomlol

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Re: Bakeneko 60 - Open source gasket mount keyboard
« Reply #5 on: Mon, 13 July 2020, 03:16:23 »
I really dig this. Iím working on a 65% and TKL o-ring gasket sandwich. Lmk if youíre interested in checking it out and I can send you the step files.

Offline kkatano

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Re: Bakeneko 60 - Open source gasket mount keyboard
« Reply #6 on: Mon, 13 July 2020, 06:31:20 »
I really dig this. Iím working on a 65% and TKL o-ring gasket sandwich. Lmk if youíre interested in checking it out and I can send you the step files.

Thank you for your suggestions. I'm interested in your great work, as I'm trying to make a TKL version in a future build. I'm glad to meet a friend who challenges O-ring mount. I will PM you.
« Last Edit: Mon, 13 July 2020, 06:33:52 by kkatano »

Offline JCraftCables

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Re: Bakeneko 60 - Open source gasket mount keyboard
« Reply #7 on: Mon, 13 July 2020, 08:21:24 »
Thanks for sharing, that's really quick progress there! Looking forward to see the finished product :)

Meanwhile, what are the key benefits that you see from such a mounting system?

Offline kkatano

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Re: Bakeneko 60 - Open source gasket mount keyboard
« Reply #8 on: Tue, 14 July 2020, 11:48:23 »
Thanks for sharing, that's really quick progress there! Looking forward to see the finished product :)

Meanwhile, what are the key benefits that you see from such a mounting system?

Thanks JCraftCables.

In my experience, It makes a bit softer typing feeling and less fatigue especially long typing session. And I think it makes a better typing sound. However, the sound is subjective and many factors other than how it is attached affect it.

As for the keyboard I'm making now, it can be fixed without screws, so it's easy to replace the PCB ;D
« Last Edit: Tue, 14 July 2020, 11:50:37 by kkatano »

Offline joecoolbob

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Re: Bakeneko 60 - Open source gasket mount keyboard
« Reply #9 on: Tue, 14 July 2020, 16:54:30 »
Nice work! I'm also working on a 60% oring mount but I'm working on something a little different but lets see how that works out. Looking forward to the final product
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Offline kkatano

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Re: Bakeneko 60 - Open source gasket mount keyboard
« Reply #10 on: Wed, 15 July 2020, 10:56:26 »
Thanks joecoolbob, I'm looking forward to seeing your board!

I found a great work by maartenwut today. I decided to change the dimensions of my case to be compatible with plain 60-flex-edition. I will get a plain 60-flex-edition and test it.
https://www.reddit.com/r/MechanicalKeyboards/comments/hriue1/fits_the_unikorn_has_flex_open_source_on_github/
« Last Edit: Wed, 15 July 2020, 11:03:27 by kkatano »

Offline joecoolbob

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Re: Bakeneko 60 - Open source gasket mount keyboard
« Reply #11 on: Wed, 15 July 2020, 20:37:29 »
btw where did you get your gaskets? I hear that o-ring.com only has about 70a which is a hard o-ring compared to the one offered in unikorn.
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Offline kkatano

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Re: Bakeneko 60 - Open source gasket mount keyboard
« Reply #12 on: Wed, 15 July 2020, 21:03:19 »
btw where did you get your gaskets? I hear that o-ring.com only has about 70a which is a hard o-ring compared to the one offered in unikorn.

I get it from a local manu in Japan.
http://www.sakura-seal.co.jp/

They sell O-rings of various standards such as AS568 and JIS, and materials such as nitrile, silicon, urethane, etc.
They can make it from 30a to 90a durometer. However, 30a requires a special order and price, so I try nitrile and silicone with 50a and 70a. They are available for around $1 to $6 each.
« Last Edit: Wed, 15 July 2020, 21:11:01 by kkatano »