Premium CNC-machinable tooling board for high-precision yacht mold fabrication. Engineered with dimensionally stable composite core for zero warping during heavy machining operations. Ultra-fine surface finish allows direct mold casting without secondary sealing. Optimized density (0.8g/cm³) balances machining speed and structural integrity. Hydro-resistant polymer matrix withstands marine environment exposure. Pre-drilled registration holes enable modular mold assembly. Thermal expansion coefficient matched to GRP/CFRP materials for distortion-free production. Standard 2400x1200mm sheets with 20mm/30mm/50mm thickness options. Ideal for prototyping hull sections, deck components, and interior moldings in shipbuilding applications. Factory-direct pricing for bulk orders exceeding 10 sheets.