Heavy Metal Keyboards

Steel custom enclosures for mechanical keyboards

Made in Germany


This is a kit that includes some basic parts to build a mechanical keyboard. This kit does not include all the necessary parts to build a complete keyboard. At minimum you can order just the enclosure. Then you would have to get your own custom switch plate made and get a compatible pcb and preferably also plate foam elsewhere. Mounting hardware and instructions are always included. The most you can order here is a kit containing the enclosure, plate, foam and pcb. To complete the build you will still need to get cherry mx style switches, stabilizers and keycaps from a third party.

If you have basic soldering skills, you should be fine. A detailed build manual is included. Hot swap pcbs are planned for 2024 but for now, all pcbs available in this shop are solder only. You can still get around soldering though. Third parties offer a variety of compatible hot swap pcbs for 40%, 60%, 65% and 80%.

Yes, currently some variants are in stock. Mostly black, gray and some inox, while just a few are left of beige and yellow. You will have to klick through the different variants to find what is left, since most cases are not available with every plate option.

Group-buys aka pre-orders are clearly marked as such. Currently there are none in this shop. Only what's in stock.

There is quite a lot of b-stock available. Those enclosures usually have blemishes that do not affect the functionality. If you are interested, please make use of the contact form, linked in the footer.

Yes, shipping world wide. Should your location not work at checkout, please contact me. Prices for international shipping, especially from Germany have increased significantly since COVID. So be aware that at checkout the price will increase quite a bit because of shipping.

The HMKB enclosure, the metal switch plates and the EPDM foam is made in Germany. The only exceptions are the pcbs and FR4 plates, they are made in China.

Sizes & Variants

Keyboard sizes ranging from tiny 40% up to almost full size 95%.
Most Sizes are available in many different variations.


The typing angle can be adjusted via a monofoot.
Available angles are 6, 8, 10 and 12 degree.


The case is a top mount construction. The plate is fully isolated via grommets.
There is no direct material contact between the plate and the case.


Comes with EPDM foam to fill the gap between PCB and plate.


Oyster White

RAL 1013

This light beige pairs well with OG Cherry keycaps and new sets like GMK 9009.


Quartz Grey

RAL 7039

Perfect fit for the classic dolch keycap set and similar.


Jet Black

RAL 9005

Black always suits well.


Traffic Yellow

RAL 1023

A vibrant yellow, fits sets like GMK Taro and Nautilus.



Stainless Steel

304 stainless steel with bead blasted finish, shown here with GMK Ashes.