Today, when we need to mark 3D printed pieces to measure their properties, we typically groove them
with numbers that allow easy human part identification and tracking. While this strategy is very
useful for manual processing, is much less susceptible to be automated as indo-arabic figures were not
designed for automated detection.
There is also another difficulty in the process: the available space is short and we typically use just 2
or 3 figures that do not allow a full part identification.
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INC, HP, "MULTI-LEVEL HEXAGONAL PATTERNS AS AN OPTIMAL MARKING TECHNIQUES FOR ADDITIVE MANUFACTURING", Technical Disclosure Commons, (July 15, 2019)