The diploma thesis presents the development and production of a rear light prototype for a 1997 Suzuki Samurai vehicle with a new design. The aim of the work was to demonstrate that functional replacement parts for older vehicles, for which original parts are no longer available, can be produced using FDM 3D-printing technology and accessible materials.
Two 3D-scanning methods were used to capture the dimensions of the original light: photogrammetry with a smartphone and laser scanning at the faculty. The comparison showed that laser scanning is the only suitable method for dimensionally reliable computer modelling. Based on the obtained measurements, a complete prototype was modelled in Autodesk Fusion, comprising the upper and lower housing, a sealing plug and a mould for shaping the acrylic glass. The housing was printed from ASA filament on a Creality K1 Max printer, the sealing plug from TPU filament and the mould from PETG filament on a Bambu Lab A1 Mini printer. The transparent cover was made from 1 mm acrylic glass using a vacuum forming method with heating by a heat gun. The development of the prototype proceeded gradually, with identified shortcomings corrected after each print and the model adjusted accordingly.
The final prototype fitted correctly into the opening on the vehicle's bumper, the screw attachment was stable, light passed evenly through the diffusion foil and acrylic glass, and the housing remained dry during the water test. The vacuum forming method produced satisfactory results, however a slightly visible line remained on the cover at the joint of the mould, indicating the limitations of the method in a home production environment.
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