SOUTH BEND LATHE MODEL 9C ( 1937-1940 ) CHANGE GEARS PART 1

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This is the start of a set of change gears designed specifically for cutting threads on an 8TPI imperial leadscrew lathe, engineered with precision to work seamlessly with South Bend lathe model 9C. The teeth are crafted with a 14.5-degree pressure angle, ensuring optimal performance and efficiency. The gear boasts a DP (Diametral Pitch) of 18, while the module measures precisely 1.411, guaranteeing true involute form. Each gear is built to be 3/8" wide, featuring a centre bore of 0.5625" and a key that's a narrow 1/8" wide. These gears are available in sets of five, providing you with the necessary tools for your specific needs. If you require custom change gears for any other application, please don't hesitate to reach out, and I'll be more than happy to assist you. Print Settings: - Rafts: Unnecessary - Supports: None required - Resolution: Utilized a 0.3mm setting - Infill: 100% solid Please note that the centre hole may print slightly undersized, necessitating cleaning out to accommodate the shafts. Additionally, some fine-tuning will be necessary around the teeth to ensure optimal performance and fitment.