Medium-Detail Product 3D Prototype Model for 3d printing

I’m finalising a new product and need a clean, medium-detail 3D model that I can hand straight to my prototyping supplier. The shape, overall dimensions and key mechanical features are already sketched; what’s missing is a fully surfaced, watertight CAD file built to real-world scale so I can move directly into CNC machining or 3D printing.

Scope
• Transform my 2-D sketches and reference photos into a solid, parametric CAD model.
• Maintain manufacturing accuracy on mating faces, wall thicknesses and tolerances while keeping cosmetic details at a sensible “medium” level so the file is light enough for rapid iteration.
• Supply STEP and STL as primary deliverables; native files from SolidWorks, Fusion 360 or similar are a plus for future edits.
• One round of revisions is included to catch any dimensional tweaks once the first prototype comes off the machine.

Acceptance
The file must open error-free in Fusion 360 and pass a basic manufacturability check—no non-manifold edges or inverted normals. Once that’s confirmed, the milestone is released.

If you’re comfortable balancing design intent with practical DFM guidelines, I’m ready to get started right away.