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Anti-aliasing for Fused Filament Deposition by Song, Hai-Chuan; Ray, Nicolas; Sokolov, Dmitry; Lefebvre, Sylvain is a scholarly article available to read on EtoBox.

What is Anti-aliasing for Fused Filament Deposition about?

Layered manufacturing inherently suffers from staircase defects along surfaces that are gently slopped with respect to the build direction. Reducing the slice thickness improves the situation but never resolves it completely as flat layers remain a poor approximation of the true surface in these regions. In addition, reducing the slice thickness largely increases the print time. In this work we focus on a simple yet effective technique to improve the print accuracy for layered manufacturing by filament deposition. Our method works with standard three-axis 3D filament printers (e.g. the typical, widely available 3D printers), using standard extrusion nozzles. It better reproduces the geometry of sloped surfaces without increasing the print time. Our key idea is to perform a local anti-aliasing, working at a sub-layer accuracy to produce slightly curved deposition paths and reduce approximation errors. This is inspired by Computer Graphics anti-aliasing techniques which consider sub-pixel precision to treat aliasing effects. We show that the necessary deviation in height compared to standard slicing is bounded by half the layer thickness. Therefore, the height changes remain small an

Author

Song, Hai-Chuan; Ray, Nicolas; Sokolov, Dmitry; Lefebvre, Sylvain

Published

2016

Language

EN