| dc.description.abstract | 3D printing is a process of making three-dimensional solid objects from a digital file process created by
laying down successive layers of material until the object is created. Many filaments can be used in 3D
printing, one of which is PETG (PolyEthylene Terephthalate Glycol). PETG is a modification of PET
(PolyEthylene Terephthalate) with added glycol at a molecular level to offer different chemical properties
that provide significant chemical resistance, durability, and excellent formability for manufacturing. This
study aims to find the most optimal parameter of surface roughness of PETG with different parameters of
nozzle temperature, infill geometry, layer height and fan speed. Taguchi L16 (44), with four levels for each
parameter, was used to determine the effect of each parameter. Each experiment was repeated five times to
minimize the occurrence of errors. Based on the result, the effect of each parameter is nozzle temperature at
4.9%, infill geometry at 5.9%, layer height at 82.3%, and fan speed at 4.6%. Layer height has the highest
effect on surface roughness, and other parameters have a low effect, under 7%. Research shows that the
optimal combination of parameters is a nozzle temperature of 220 °C, infill geometry zig-zag, layer height
of 0.12 mm, and a fan speed of 80 %. | en_US |
