Upload a 3D model and read the one honest report every other tool wishes you had run first: units and scale sanity (never a silent rescale), naked and non-manifold edges, open vs. closed meshes, flipped winding, a layer / type / block inventory, and printer bed fit — each finding written in plain language and tagged with the downstream tool it affects. Everything is parsed in your browser; nothing is uploaded. Plumb diagnoses; it never repairs, welds or rescales your file.
Client-side — nothing is uploaded. Plumb diagnoses; it never repairs or rescales your file.
Drop a 3D model to pre-flight it
.3dm (Rhino), OBJ, STL, PLY, GLB / glTF. Parsed in your browser — nothing is uploaded. Plumb reads it; it never changes it.