The sound board is an iteration fit. The ones made from wood where an old guy who knows game intimately will have gradually sanded the shape down till it sounded perfect, I mean real perfect as in it sounds exactly like the game, but prior will have thrown away many dozens of sound boards and even when he finally renders one for sale it will still be sanded that less that .05 there and there along the hyperbolic plane, and we haven't begun to discus airflow via the channel including diameter and angle so the reed is energized for the correct rate of vibration. The reed's resilience another selective process.
A 3d printer does not provide any of the gradual sanding process to adjust for perfection. Its either failure or success, no subjective hypothesis exists either and filament temp, type, layer height, orientation of seam and nozzle size will also alter it.
So it took over two weeks to produce the Sika call on a printer and I'm not finished.
They have been literally arriving at my door to get one, it is the best in the world.
The great thing about this tech is it doesn't need 10,000 made in Taiwan, anybody with an idea can do it.