Designing for 3D printing is different from designing for injection moulding or CNC. Avoiding these common pitfalls will save you time and frustration.

1. Ignoring Wall Thickness

Thin walls can warp, break, or fail to print. We recommend a minimum of 1.2 mm for FDM and 0.8 mm for resin printing.

2. Overusing Overhangs

Angles above 45° will require support, which affects surface quality and increases post-processing.

3. Not Considering Orientation

Layer orientation affects strength. Consider the direction of stress on functional parts.

4. Forgetting Tolerances

For parts that need to fit together, leave a clearance of at least 0.2 mm for FDM printing.

5. Overcomplicating Features

Simplify your design for faster printing and fewer issues. Avoid unnecessary fine detail unless using resin.

Need design help? Contact BritForge 3D and we’ll review your model.