Search for 3D house printer for many more examples of big 3D printers:
For what it’s worth - I present my first 3d printed board. To my knowledge, the first with a wood stringer!
The biggest challenge was printing the middle parts, they kept on warping (worse than the lower right part on the picture). So my printer friends opted for a 3% infill, making them waay heavier than top and bottom parts - this uneven weight distribution might make it close to impossible to surf, tbc.
Let’s see how the glassing goes - will below-average-surfers like me notice the bumps in the lower parts - they continue on the underside - (drag, or even not going straight?) or should I try to fill them?
