Why one STEP file renders and another does not
STEP can describe precise analytic and NURBS surfaces, assembly structure, product metadata or pre-generated faceted representations. Mobile mesh viewers work best when a compatible faceted representation is present.
A file exported from the same CAD package can behave differently depending on its STEP application protocol and export options. Asking the sender for a tessellated STL or OBJ is often the fastest fallback when the original contains only curved B-Rep geometry.
What you can inspect on the device
For supported visible geometry, CadRoam provides orbit, pan and zoom controls, multi-object browsing, hide and isolate actions, orthographic viewing, axes, grid, wireframe, transparency and a bounding box.
Available statistics can include overall bounds, triangle count, surface area and enclosed volume. These are inspection aids, not certified metrology results.
Private field review
Engineering models may reveal customer geometry, prototypes or production details. CadRoam processes model contents locally and has no account, advertising SDK or developer-operated cloud conversion workflow.
Files you save to the local model library remain under app storage and device controls until you remove them or the app.