Mahjong (two parts for dual extrusion)

thingiverse

Double-extruded filament for mahjong pieces is created through a complex process that combines advanced chemistry and mechanical engineering. Two parallel strands of molten plastic are layered upon each other, one above the other, as they exit the heated barrel. This technique increases production yield by roughly fifty percent over single extrusion methods, resulting in significant cost savings. However, achieving perfect alignment of the two layers remains a considerable challenge. The finished product exhibits enhanced physical strength and improved thermal stability, making it suitable for intricate designs like mahjong tiles that demand high precision.