My wife is into 3D printing and has designed a variety of things for printing with our home printer and also for professional printers. We are considering designing a bachi that can be printed with special flexible plastic. I'm not sure if it will work, but we're willing to try. Has anyone here heard of anyone attempting to create or successfully creating 3D printed bachi, before?
In regards to weight, many tsugaru players prefer a heavier handle (usually facilitated with lead weights) to emphasize the stronger picking.
But there's nothing wrong with a lighter bachi; it's a matter of taste and tradition.