Hey Guys, Girls and NBs,
To be frank... I am totally new to custom keyboards. like "have few Monsgeeks and some Akko switches" new.
That disclaimer is out the way, and this following one apologising if this has been discussed, covered, or done before......so straight into it!
The NAVY MOD idea.
I recently read a paper
3D printed acoustic metamaterial sound absorbers using functionally-graded sonic crystalshttps://www.euronoise2018.eu/docs/papers/2_Euronoise2018.pdfTL;DR
The paper discusses a method of creating sound-absorbing materials using 3D printing technology. The researchers used a special type of material called "acoustic metamaterial" which is designed to control and manipulate sound waves.
The researchers focused on a specific type of acoustic metamaterial called "functionally-graded sonic crystals." These materials are made up of tiny repeating structures that are designed to have different properties in different areas. By carefully arranging these structures, the researchers were able to create materials with unique sound-absorbing properties.
To create these materials, the researchers used a 3D printer and TPU filament.
The resulting 3D-printed material had the ability to absorb sound waves at specific frequencies. This is important because different frequencies of sound can have different effects on our ears and environment. By designing the material to absorb specific frequencies.
The researchers tested the 3D-printed sound absorber and found that it performed well, reducing the sound at specific frequencies. This has potential applications in various fields such as architectural acoustics, noise control, and even in the design of musical instruments (And the military, this was funded by the US Navy).
Overall, this research shows that 3D printing technology can be used to create custom-designed sound-absorbing materials with specific properties. This opens up new possibilities for developing improved sound control for keyboards.
This is how I plan to implement and test:
Pick a Keyboard that is easy to 3D print multiple iterations.

Use the majority of the space for the TPU acoustic metamaterial

Experiment with infill percentages of the TPU acoustic metamaterial to see the effect different lattice densities have on the absorption and dampening of 3 main ranges of sound, 300-1000Hz, 1000-3000Hz and 3000+Hz.


Look at adding secondary plates to the base to reduce resonant sound having picked ABS as a material for the keyboard enclosures (more for practical use case than for any data)

Would really appreciate any thoughts or feedback from those who know much for than me on the topic of keyboards, so that's just about every member here!