Follow these design best practices to ensure your parts are printable and meet quality expectations:
Wall thickness
Minimum: 1.2mm for FDM, 0.8mm for SLA (1.5mm unsupported), 1.0mm for Industrial SLA, 0.7mm for MJF, 2.0mm for FGF
Recommended: 2.0mm+ for structural strength
Avoid extremely thin walls that may warp or break
Overhangs & bridges
Keep overhangs under 45° when possible
Angles steeper than 45° require support material
Supports leave marks that may require post-processing
Small features & details
Minimum feature size: 1.8mm for FDM, 0.5mm for SLA
Text should be embossed or engraved at least 1mm deep
Avoid tiny protruding details that may break off
Tolerances & fit
Add 0.2-0.4mm clearance for FDM parts that need to fit together
Add 0.1-0.2mm clearance for SLA parts
Account for material shrinkage in precision assemblies
Holes & threads
Design holes 0.2mm smaller for press-fit inserts
Avoid printing threads — tap after printing or use threaded inserts
Orient vertical holes along the Z-axis for best results
File preparation
Export as STL or OBJ with proper units (mm recommended)
Ensure models are watertight (no gaps or holes)
Check normals are facing outward
👉 Our engineering team reviews files for printability issues and will flag potential problems before production.