High-Detail 3D Printable Anatomy Model

I need a highly detailed, print-ready 3D model of a single human body part for a prototyping and design project—not for clinical or diagnostic use. Once we agree on the specific part, I will share details, rough dimensions, and functional notes; your task is to translate those references into an anatomically realistic mesh that can go straight to an FDM or SLA printer without further cleanup. Would also like to have a step and editable 3D part file as well.

Mesh expectations
• True high-resolution anatomy: visible muscles, skin folds, and subtle surface variation where appropriate.
• Fully manifold and watertight, with no non-manifold edges or inverted normals.
• Optimised for additive manufacturing—reasonable wall thicknesses, thoughtful orientation, and if necessary a version split into keyed sections that fit standard build volumes.

Deliverables
1. Final STL ready for slicing.
2. Native/source file (Blender, ZBrush, Maya, or comparable) with clean topology so I can adjust minor features later.
3. Brief print setup note describing recommended layer height, infill, and support strategy.

Please highlight any past anatomical modelling work, which software you prefer, and your typical turnaround time. I’m ready to start as soon as I find the right modeller.