Synth building is where soldering iron meets sound design: you assemble oscillators, filters, and modules from kits, then patch them together into an instrument that's genuinely yours.

It scratches two itches at once — the methodical satisfaction of building electronics and the open-ended play of making sound.

The honest warnings are that soldering is a skill you'll fumble at first, debugging a silent module tests your patience, and Eurorack in particular is a famously expensive rabbit hole once you're hooked.