Keyboard Builders' Digest
Save 15% at The Kapco! Code: KBDNEWS
Keyboard Builders' Digest / Tips & Tricks


After last week's post, Kate of HIBI got back to me with more info on her uniform BLOCK keycap profile.
Published March 23, 2023

As I pointed out earlier, Deadline Studio and HIBI came up with very similar uniform keycaps with a nice retro vibe:

I had a recent conversation with Deadline Studio and we discovered that we both coincidentally created a similar profile! – Kate.

Kate began developing these caps for her SP-8 / Side Piece macropad in late 2021/early 2022.

Pic: HIBI SP-8 macropad

HIBI SP-8 macropad

Her uniform spherical keycaps were inspired not by the Siemens caps as I supposed but by a tasty cap that has been used on synths for several decades: the Marquardt 6425 – which is both a switch type and the accompanying family of keycaps.

Pic: Marquardt 6425

Marquardt 6425

The switch itself has a rather strange stem, obviously not MX compatible, however, one of the available pitches is 19mm so theoretically it could be used on nice clean ortho keyboards – if it weren't that expensive.

The Marquardt caps come in various sizes and colors, and there's even a cute version that features a hole for an indicator LED.

So much for inspiration and about the Marquardt find. With regards to the differences and availability of the BLOCK profile Kate added:

I'd say that my block caps have a deeper spherical scoop and are fully polished – I also currently don't have anything other than 1U size! At the moment I'm just testing the waters and offering a translucent white finish so there's very limited quantities.

Addressing my concern about the difficulty of removing these keycaps – well, caps with similar square base in general – Kate told me the footprint is just about the same size (with some small tolerance variables) as a Cherry cap. And she haven't found too much difficulty in getting the keycap puller in between the caps so far.


Published on Thu 23rd Mar 2023. Featured in KBD #117.

Did you like reading this post?

Donate to keep this project alive


Microswitch SD to MX adapter

Jpl3k designed an adapter to run a Microswitch SD keycap on an MX mechanical keyboard.

MTNU keycap profile

Matt3o announced that his WIP MTNU keycap profile will be manufactured by GMK.

FDM-printable Chicago Steno

Pseudoku's Chicago Steno keycaps optimized for FDM-printing by u/levpopov.

Saddle keycap profile

A great write-up on the evolution and ergonomics of 大岡俊彦's saddle keycap profile.

Home-made double-shot caps

For his 3D printed low-pro keyboard, Pavlo Khmel uses self-made double-shot keycaps.

Resin keycap casting

Make your own set of keycaps with silicone molds and UV-curable resin.