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Recently, developing 3D printing (3DP) technologies have been substantially increased, because its advantages toward the direct fabricating of 3D physical model from the CAD system. Although several advantages over the subtractive method, there are still many difficulties and problems for building a precise and efficient part. Building time and Accuracy are two important concerns in 3DP. To speed up the building process and improve the accuracy at the same time, an algorithm based on mathematical models will be presented. The algorithm presents variable slicing strategy by adjusting the layer thickness to consider the curvature and flatness of the 3D CAD surfaces, in order to reduce the number of building layers, staircase effect, and consequently decrease the building time and cost. Through this proposed analytical study and the results, the number of layers were saved by 54% that will decrease the building time by the same percentage.

SPEEDING UP ALGORITHM FOR BUILDING THE STL MODEL USING 3D PRINTING