I already have an STL file that captures the overall look of a set of complex-curve, organic and biomorphic parts. What I do not have is a watertight, engineering-ready solid 3D file that I can push straight into structural analysis. The task is to rebuild—or, if easier, remodel from scratch—the STL reference into a true solid body and export it as a STEP file. Every curve must follow the original organic flow, but the result has to pass a solid check in SolidWorks (or any CAD platform able to output a neutral STEP). No surface gaps, overlaps, or open edges can remain; the final body needs to behave as one piece so that finite-element meshing runs cleanly. Deliverables • Native CAD file (SolidWorks preferred, but any parametric platform is fine) • STEP file of the validated solid model • A brief note on the approach you took and any tolerances or assumptions applied I will supply the STL and can answer dimensional or intent questions quickly. If anything in the scan looks ambiguous, flag it before locking geometry so the final model remains faithful and analysis-ready.