Custom 3D Model for Printing

I want to tackle this as a pure graphic-design job focused on 3D modelling for print. My goal is to receive a clean, watertight model that can go straight to the printer without extra fixes.

Here’s what I need from you:
• A high-quality 3D mesh in STL (and, if available, the native file—Blender, Fusion 360, or SolidWorks are all fine)
• Proper wall thickness and manifold geometry so the slicer has zero errors
• Scaled to the dimensions I will supply once we start

I’ll share sketches, reference photos, and exact measurements right after kickoff. If anything is unclear, feel free to propose the best approach; I’m flexible as long as the end result is print-ready.

I consider the project complete once I load your file into my slicer, see no red flags, and the first test print looks as expected. Let’s get this 3D design finished so I can move straight to production.