Free tools for 3D model support layers typically include PrusaSlicer, Cura, and MeshMixer—slicing software that generates and customizes support structures for 3D printing.
Cura is beginner-friendly, with preset support settings for most basic prints. PrusaSlicer lets you adjust support density, pattern, or placement for precision. MeshMixer excels at organic or complex shapes.
For new users, start with Cura—it balances ease of use and functionality to help you get started with support layers quickly.