| Snap-Fit Joints Snap-fit joints are interlocking connections designed for assembly without adhesives or fasteners. Common in functional 3D-printed components, these joints rely on precise tolerances and material flexibility. PLA is generally too brittle for snap-fits, whereas PETG, ABS, and TPU offer better durability. Design considerations such as fillets at stress points prevent breakage during repeated use. Snap-fits can be categorized into cantilever, annular, or torsional designs, each serving different assembly purposes. Proper layer orientation during printing strengthens these joints by minimizing weak interlayer adhesion. |
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