Yawancin sassan injina na CNC don duba kyamara ko amplifier bangare ne na bayyanar kuma ana buƙatar babban inganci don saman. Yawancin lokaci, ƙarshen waɗannan sassan mashin ɗin aluminium na CNC sune anodized baki da anodized blue. Ana duba samfurin daya bayan daya kafin kaya.