Inspect a 3D print model before you slice it.

A slicer is designed to prepare a print, not necessarily to help you understand the model at a glance. Before slicing, it is useful to confirm scale, coarse geometry, material volume and whether the intended internal structure is actually present.

3D Viewer Pro separates those checks from slicing. It opens STL and 3MF print meshes, shows geometry and bounding data, estimates material from enclosed volume and offers diagnostic shading modes for structural review.

Pro extends the inspection with X/Y/Z section planes. They are valuable for looking through a model to inspect internal cavities and the distribution of wall thickness, but they are a visual method rather than an automatic metrology result.

Bounding dimensions and volume are fast ways to catch scale mistakes or a model that is much larger or smaller than intended. Material estimates combine that volume with density and filament cost inputs.

Section views help you reason about internal form, but they do not certify wall thickness or manufacturing tolerances. For production-critical measurements, use CAD, mesh analysis or metrology tools designed for that purpose.