Issue:

The lattice from CAD face doesn't match up with the CAD face shape as I expected it to. 

Applies to:

• Lattices, CAD faces

Cause:

This is because CAD faces are essentially 4-sided patches that are trimmed to a certain shape. When the CAD face is reparameterized, it uses the untrimmed surface, resulting in your lattice not matching the trimmed shape. This is a limitation with the CAD face format. 

Solution:

We are actively trying to improve this behavior. In the meantime, we recommend trying out different blocks to create a lattice from your part:

• • Filter Mesh by Flood fill (to prep your part for lattice creation)
  • Lattice Body from Surface Mesh
  • Lattice Body from Volume Mesh
  • Voronoi Volume Lattice
  • Lattice Body from Quad Mesh

More on this topic:

• Beta lattice blocks: Unit Cells, Cell Maps, and Lattice Bodies
• How to build a custom lattice unit cell
• How to create a Voronoi surface texture