3D Printing Functional Parts: Design, Materials, and Mechanisms
Learn to design, slice, and print durable, mechanical components using FDM 3D printing. This course covers material selection, Design for Additive Manufacturing (DFAM), slicer optimization, and creating precise tolerances for moving parts and assemblies.
The Functional Printing Mindset & FDM Mechanics Explain the concept of anisotropy in FDM printing and its impact on part strength. Prioritize mechanical reliability and layer adhesion over aesthetic surface finish. Determine when to use FDM versus SLA (Resin) or SLS (Powder) for specific functional applications. Selecting the Right Material Evaluate the mechanical and thermal properties of standard functional filaments (PETG, ABS, Nylon, TPU). Match specific materials to real-world environmental and mechanical requirements. Part Orientation and Overhang Management Optimize part orientation to maximize strength against applied loads and minimize weak points along layer lines. Apply DFAM principles to reduce or eliminate the need for printed supports. Slicer Optimization for Structural Strength Differentiate between the structural impact of perimeter walls versus infill density. Optimize slicer settings, including wall thickness and structural infill patterns like Gyroid, to maximize part integrity. Mastering Tolerances and Mechanical Fits Calculate and apply appropriate clearances for press fits and slip fits. Account for tolerance stack-up in multi-part assemblies. Design and execute a simple calibration print to test printer dimensional accuracy. Designing Mechanisms and Connectors Design and integrate reliable snap-fits and mechanical connectors (pins, dovetails) into 3D models. Apply design rules for successful print-in-place moving parts and hinges.