Ask HN: Any hardware startups here?
We make the world's best baby car seats.  https://www.kioma.us  Fatherly Magazine calls it "The Car Seat of the Future".  It's been crash tested, flight inversion tested, flammability tested and mom tested.  It is full of patented innovations to make kids safer and parenting more enjoyable.It required lots of material science, production techniques, supply chain adjustments, and a surprising amount of software (to model dynamic stress, and to run the robot and CNC trim paths).  Once you get to the point you can clearly articulate your BOM and Specs to a manufacturer for MOQ=50, things get a lot easier.  At the prototype stage we built everything ourselves, but now we use OEM manufacturers.