The physical size is a property inside Substance materials that defines their real size. It can be used to match accurately the size and look of materials over 3D surfaces. Painter uses centimeters as the default internal unit.
To use the physical size, load a material with the property with a value other than 0,0,0 then enabled the physical size mode in fill layer (or effect) under UV transformation.
For more information, see:
- Physical size scaling is only available with 3D projections.
- Most mesh file formats specify the unit used during mesh creation, this unit will be converted to centimeters automatically during import.
- Some formats, like .obj, do not have unit information, so when a project is created using an .obj mesh, it will be measured in centimeters by default without any conversions.