研究目的
Assessing the influence of the position of the model in the working area to decrease micro-deformations during SLA 3D printing.
研究成果
Deviations in SLA 3D printing are caused by shrinking in initial layers due to supporting props and expansion from systematic errors in layer building. Distortions are generally smaller in X direction than Y, except at 75° tilt, with Y direction coinciding with Z axis movement. Minimum deviations occur at 30° tilt angle, making it optimal for reducing distortions in micro- and nanotechnology applications.
研究不足
The study is limited to SLA 3D printing with specific photopolymer and printer model; distortions are influenced by supporting props and systematic errors in layer building, which may vary with different materials or printers.
1:Experimental Design and Method Selection:
A numerical model with micro-squares was designed to evaluate deviations in SLA 3D printing at different tilt angles (0°, 30°, 45°, 60°, 75°, 90°) using coordinate grid method for deviation assessment.
2:Sample Selection and Data Sources:
A CAD model with dimensions 30x30 mm and thickness 3 mm, containing 15x15 micro-squares of 500x500 μm with 1000 μm intervals, stored in *.OBJ format.
3:List of Experimental Equipment and Materials:
SLA 3D printer Formlabs
4:0, Castable Resin photopolymer, optical microscope Carl Zeiss Jena with 3x magnification, 5MP digital camera with S-EYE software. Experimental Procedures and Operational Workflow:
Models were tilted using PreForm software, printed with 25 μm precision, coordinates measured via microscope and camera, deviations calculated using equations for relative distortions in X and Y directions.
5:Data Analysis Methods:
Mathematical processing of coordinate data to plot colored graphics of deviations, comparative analysis of positive and negative distortions across angles.
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