Keyboard Builders' Digest
Save 6% at SwitchCaptain! Code: KBDNEWS
Keyboard Builders' Digest / Tips & Tricks

Mobop keycaps

Mobop is a retro-inspired uniform keycap profile shared by Penk Chen – for low-pro switches!
Published August 10, 2023
Creators! Feel free to tip me off about your keyboard related projects to bring them to 100K readers.

Penk Chen (creator of the Penkesu cyberdeck) published Mobop, a low-profile keycap set designed for Choc V1 switches – in the range of 1U to 2.25U, plus a 4.75U spacebar. (Have I told you I love homing dashes?)

And all keycaps above 2U should work with Choc V1 stabilizers (PG1350) too.

Pic: MBK Convex vs CFX vs LDSA vs Mobop

MBK Convex vs CFX vs LDSA vs Mobop

I wasn't able to decipher the name so reached out to the author inquiring if it has a hidden meaning:

That's actually a working title (lame one) – the keyboard will be part of my next portable Framework Mainboard terminal build, so mobo-p for short – Penk.

If the shape of these uniform caps look familiar, it's not a coincidence. Ardent readers may remember similar profiles seen on vintage boards but also some novel ones introduced this year.

Siemens – Penk's original source of inspiration –, Tandberg, Reuters boards of the '80s, the Marquardt 6425 caps, and more recently Doys by Deadline.Studio and BLOCK by HIBI. The SLK by Kema/FKcaps has a similar circular top surface too, and maybe Matt3o's MTNU could be seen as a transition between this retro design language and the common Cherry/SA world.


Last time, after the Doys & BLOCK posts, cerement sent me an elaborated list with even more examples of this type of keycaps (thanks!): e.g. Devlin Teletype Z series, and there are also those old MX-compatible Adler electric typewriter models.

All in all, we have something similar for low-pro switches now.


Do you like this post? Share, donate, subscribe, tip me off!

Published on Thu 10th Aug 2023. Featured in KBD #130 (source).


Anodized aluminum MBK/MCC

MoErgo's Stephen announced an anodized aluminum version of both the MBK and MCC profiles.

Cherry row identifier

u/Hekekee designed a 3D-printable tool for identifying Cherry keycaps' row.

Choc keycaps on an FDM 3D printer

You can print decent Choc keycaps on an FDM 3D printer (pics), just tilt them 45°! Posted by irveln. (Waiting for STLs.)

Home-made double-shot caps

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

Keycaps from bottle caps

LODGE, a Japanese makerspace offers workshops where you can make your own keycaps from bottle caps.

MCC keycap profile

MCC is a new cylindrical keycap profile for Kailh Choc low profile switches by MoErgo.