An Investigation of Sloped Surface Roughness of Direct Poly-Jet 3 D Printing

This paper presents an experimental investigation of sloped surface roughness of the direct Poly Jet 3D printing process (DPJ-3DP). The parameter tested is the angle θ of the slopped surfaces in X and Y directions. The surface roughness parameter measured were the average mean surface roughness (Ra, μm), and the total height of the roughness profile (Rt, μm). The investigation shows that both Ra and Rt increased when the angle θ increased, in both X and Y directions. Additionally, the best value of surface parameters was achieved at angle θ equal to zero and the worst at θ equal to 90 degrees. Keywords—Surface roughness, direct poly-jet 3d printing, Sloped Surfaces

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