A system and method for fabricating custom implant abutments uses an implant abutment connector to secure a partial blank with respect to a milling tool of a CNC milling machine. The implant abutment connector has an implant interface geometry of an implant. The partial blank can have a prefabricated implant abutment interface geometry of the implant abutment and can thus mate with the implant, and the implant interface geometry of the implant abutment connector.
