3D Model Correction and Creation (3D printing)

I need an expert in 3D printing model design to correct existing models and create new ones. Familiarity with non-manifold correction for splicers like Creality Print is crucial.

Requirements:
- Correct and create functional prototype models
- Deliverables in STL file format
- Experience with Creality Print 5.1 is a must

Ideal Skills and Experience:
- Proficiency in 3D modeling software
- Strong understanding of 3D printing processes
- Detail-oriented with a keen eye for identifying and fixing model errors