Feasibility study of PETG filament using FDM 3D printing technique for throttle sleeve products

Object of Research: This study focuses on the production technology of motorcycle throttle sleeves using PETG Filament (Polyethylene Terephthalate Glycol) with 3D printing technology, specifically the Fused Deposition Modeling (FDM) method. Investigated Problem: The main issue addressed is the lack of spare parts for the Hyosung Cruise II Motor 125 from 2001, as production has ceased. This study analyzes the feasibility of using PETG filament to produce throttle sleeves and identifies the optimal printing parameters for maximum tensile strength. Main Scientific Results: Initial printings were performed to identify the best combination of parameters that result in the strongest tensile strength. Testing was carried out with variations in infill pattern, nozzle temperature, and layer height according to ASTM D638 for the tensile test. The results show that the highest tensile strength of 43.5 MPa was achieved with an infill pattern line, a nozzle temperature of 250°C, and a layer height of 0.1 mm. The microstructure analysis indicated that the specimen with the highest tensile strength had a dense layer structure with minimal porosity, while the specimen with the lowest tensile strength exhibited high porosity. Product testing demonstrated that the gas cylinder casing could withstand a load of up to 41.94 N. The production cost per unit was Rp 28,655.37, indicating the efficiency of the process. Area of Practical Use: The research results can be practically used by companies specializing in the manufacture of motorcycle components, particularly for old and discontinued models. Innovative Technological Product: This study presents an innovative production technology for motorcycle throttle sleeves using PETG filament, enabling the production of spare parts for older motorcycle models. Scope of the Innovative Technological Product: The newly developed throttle sleeves can be utilized in the repair and maintenance of old motorcycle models, providing a cost-effective solution for motorcycle enthusiasts and repair shops.