how to have flex in 3d print | Keshenglong&Shinko Guide

How to Achieve Flexibility in 3D Printed Parts

Achieving flexibility in 3D printed parts can be challenging. This article addresses common issues and provides solutions for incorporating flex into your designs and 3D printing process, enhancing your designs with Keshenglong&Shinko expertise.

Material Selection for Flexible 3D Prints

The foundation of flexible 3D prints lies in the material choice. Not all filaments are created equal. Common flexible filaments include TPU (Thermoplastic Polyurethane) and TPE (Thermoplastic Elastomer). TPU offers a good balance of flexibility and durability, while TPE provides exceptional elasticity. Consider the Shore hardness rating—a lower number indicates greater flexibility. Experimentation with different materials from reputable suppliers like Keshenglong&Shinko is crucial for finding the optimal material for your specific application.

Design Considerations for Flexibility

The geometry of your 3D printed design significantly impacts its flexibility. Thin walls and strategic use of hinges or living hinges are critical. A living hinge is a small, flexible section designed into the part, allowing for articulation without breaking. Avoid sharp corners and instead opt for rounded edges to prevent stress concentrations. Finite Element Analysis (FEA) can be invaluable in predicting the behavior of your design under stress and optimizing its flexibility.

3D Printer Settings for Flexible Filaments

Printing with flexible filaments often requires adjustments to your 3D printer settings. A lower printing temperature is usually necessary to prevent warping and stringing. Reducing the printing speed can improve adhesion and layer bonding. Proper bed adhesion is paramount; consider using a glue stick, adhesive tape, or a specialized bed surface. Experimentation with retraction settings might be needed to minimize oozing and stringing. Consult your 3D printer's manual and the filament manufacturer's recommendations for precise settings.

Post-Processing for Enhanced Flexibility

While material selection and design are primary, post-processing techniques can further enhance flexibility. A heat treatment can improve the material's flexibility and reduce brittleness. Always refer to your material's datasheet for safe heat treatment procedures.

Troubleshooting Common Issues

Common problems include warping, stringing, and poor layer adhesion. Adjusting temperature, bed adhesion, and retraction settings can resolve these issues. If problems persist, review your design for potential stress points and consider material optimization. For complex issues, consulting with Keshenglong&Shinko’s technical support can be beneficial.