... investment casting process offers many benefits including cost savings, design freedom, close tolerances, better finishes, savings in machining ... and external configurations is seen as a plus.4.Design enhancements: There is no draft requirements in the ... investment casting. Metals PouredMelting CapacityTypical Alloys PouredAluminum1,500 lbs.All aluminum alloys including 319, 355, 356, 357, 359, 380, ...