This is a lifetime project as modular synthesizers can be endless... I just started to build simple modules like a powersupply, squarewave oscillators, buffered mixer and some modulators. A big thanks goes to Kristian BlÄsol for his really encouraging videoseries about building your own modular synth. It got me started!
It was also the music of Jaap Vink which really inspired me. This guy made electronic soundscapes back in the 60s which sound just amazing! I had the luck to digitize some of his tapes which are part of the Gaudeamus Music Archive which are preserved in the Allard Pierson Museum. He used ring modulation in a feedback loop to establish complex textures controlled by sort of an inversed envelope follower to avoid the feedback is going crazy.
For this project I made a wooden box to put enough modules into to get started. The frontpanels are made from 4mm plywood, it's cheap and easy to work with and yet not unimportant it doesn't conduct. I just used my soldeer tip to burn the names and labels on the panels :)