What is Fit Lattice?

Fit Lattice is a Blender add-on that lets you instantly wrap a lattice deformation cage around one or more meshes — with full control over orientation, subdivision, and cleanup — right in your workflow.
Why Fit Lattice?

• Custom rotation & alignment
  Fit Lattice can align and resize a lattice at any rotation, wrapping it snugly around objects that aren’t axis-aligned.

• Edit mode support
  Works while you’re modeling — you don’t need to leave edit mode to use it on selected faces, edges, or vertices.

• Automated apply & cleanup
  One-click options to apply the lattice deformation and remove the lattice, modifiers, and vertex groups when you’re done.

• Interpolation Options
  Automatically set the Lattice to different interpolation options (B-Spline, Linear, Catmull-Rom) in one go.

• Batch & multi-object support
  Fit a single lattice to multiple meshes at once, streamlining your workflow on complex scenes.

• Presets & customization
  Choose from built-in subdivisions (e.g. 2×2×2, 3×3×3, 4×4×4) or define your own grid dimensions.

• Proven and actively maintained
  This add-on has been in use for years and is continually supported — updated and improved for as long as it remains useful.

If you have any questions, issues or feature requests, email [email protected], click to 'Contact Creator' button on my store page, or reach me on X/Twitter.

Updates

Version 1.9.0: Apply Option

Added Apply Fit Lattice: a one-click operator to bake deformation, delete the cage, and clean up associated vertex groups.

Version 1.8.0: Mesh Deform mode

Introduced Mesh Deform mode — you can now also fit a mesh cage (instead of only a lattice) around your objects and use Mesh Deform modifiers for deformation.  Note: Remember to click 'Bind' at the bottom of the options screen that appears in the bottom left of the viewport when running the add-on to apply the deform binding.

Version 1.4.0: Rotate Lattice and Deletion

Now there is an additional rotation parameter to allow you to rotate the lattice; as you rotate, the lattice will shrink to fit around the minimum contour.  Useful for deforming objects, or parts of objects, that are at an odd angle.

There is also a new menu option called "Remove Fit Lattice", which allows you to remove the selected Lattice along with associated modifier and vertex groups in one go:

Version 1.2.0: Edit mode!

Fit Lattice will now work in edit mode when you select faces, edges or vertices:

Take a look at the documentation and let me know if you have any questions or issues.

Version 1.0.3: Blender 2.8 Beta

I have now upgraded the add-on for 2.8 beta and put it ready for download alongside the 2.7 version. You will be able to tell the 2.8 zip file version because it ends in 2.8!  I'll be updating the documentation once 2.8 becomes the main Blender release.  It should also work with the existing presets.

Blender 2.8 is still in beta, so if you have any problems with the add-on let me know.