Forster Tool Forster Tool originally built its reputation as Swiss Screw Custom Machining specialists. Through the years, our desire to anticipate and fulfill the needs of our clients has led to continuous investment in new developments in machinery and technology. in Public bookmarkswith cnc_turningswiss_screw_machined_products Note: Forster Tool originally built its reputation as Swiss Screw Custom Machining specialists. Through the years, our desire to anticipate and fulfill the needs of our clients has led to continuous investment in new developments in machinery and technology.