... craft:lost wax process 3) mirror ,electro-polish invesment castingSpecification1, investment casting ,precision casting2, carbon steel / alloy steel /stainless ... FIMA , AP,QP,QA,QC,AOL,RDThe ultimate success of casting design deponds on the communications between the designer ... .However ,this is generally not required on production commercial investment casting ; Doing so well add cost ,the following ...