TOOL SHOP In-house engineering Coastal Plastics has an in-house engineering department. The engineering staff, tool shop, molding department, inspection and sales department work closely to ensure quality products in a timely manner at the best competitive rate.   Coastal uses the latest technology and highly skilled mold makers to manufacture our molds.  The tool shop is capable of manufacturing short run prototype molds to hot runner production molds.  We utilize CAD programs, CNC equipment, manual milling and turning equipment, EDM, grinding, welding, heat treating and polishing.  We maintain all molds at our facility with regular maintenance, scheduled cleaning and repairs.