Abstract
<div class="WordSection1"><p><em>Rapid prototyping or commonly known as additive manufacturing uses metal and non-metal semi-liquid materials which are compacted layer by layer. Fused deposition modeling (FDM) is one of the methods in the additive manufacturing process that u</em><em>ses</em><em> thermoplastic filaments (PLA and ABS). Poly Lactic Acid (PLA) or poly lactic acid is an organic</em><em> plastic</em><em> or bioplastic made from renewable biomass sources such as corn starch, pea starch and vegetable oils. Important factors affecting the quality of 3D Printing results are nozzle diameter, nozzle temperature, bed temperature, infill patern, </em><em>infill percentage</em><em>, print speed, layer thickness and </em><em>infill overlap</em><em>. </em><em>Infill overlap</em><em> is the percentage of overlapping processes of the filament during the printing process. This research was conducted to determine the effect of </em><em>infill overlap</em><em>on the physical and mechanical properties of 3d printing products. The </em><em>infill overlap</em><em>variations used are 0%, 25%, 50%, and 75% of the nozzle diameter. 50% variation shows better quality when compared to other variations for density test, tensile test, and bending test.</em><em></em></p></div><em><br clear="all" /></em>
Highlights
In this modern era, technological development cannot be avoided and is an indicator of the progress of a country
The variation parameters used are the percentage of infill overlap 0%, 25%, 50%, and 75% of the nozzle diameter
The tests carried out refer to ASTM D792 testing standards for density testing with Archimedes law, ASTM D638 for tensile tests, and ASTM D790 for bending tests
Summary
Technological development cannot be avoided and is an indicator of the progress of a country. According to Rinanto [2], the additive manufacturing process is often used in industry because in its use it can minimize the presence of parts wasted during the production process. According to Putra [3] the process of rapid prototyping, known as the three-dimensional printing process (3D printing), was developed in 1981 by Hideo Kodama. Techniques in rapid prototyping include selective laser sintering, stereolithography apparatus (SLA), digital light processing (DLP), electronic beam melting (EBM), selective laser melting (SLM), and fused deposition modeling (FDM). In 1990 Fused deposition modeling (FDM) was introduced and commercialized by a 3D printer company called Stratasys. FDM is a printing process that uses thermoplastic filaments (PLA and ABS) as the basic ingredients of the 3D printing process
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