Onshape Surface Model Rebuild

I have an existing STEP file that I now need rebuilt directly in Onshape as a set of clean, fully editable surfaces. The goal is to reproduce the geometry so accurately that it overlays the original STEP with virtually no deviation, yet remains parametric enough for future tweaks.

This rebuilt version must be suitable for manufacturing or machining, which means proper surface continuity, no imported dumb solids. If you are comfortable with Onshape’s surfacing, lofts, and continuity tools (e.g., Face Blend, Fill, Enclose), this should feel familiar.

Deliverables
STEP file to editable Onshape part

I’m ready to start right away and would like a quick turnaround, so please let me know how soon you can jump in and how long you expect the rebuild to take.