Production-Ready 3D Printable Microscope CAD Design

I am building a compact laboratory microscope / optical diagnostic device and need a production-ready 3D CAD assembly that can be 3D printed, assembled, tested, and iterated into a real working prototype.

The goal is not just a visual model. I need a functional mechanical design with realistic part separation, screw holes, tolerances, motion clearances, and assembly logic. The design should be clean, engineering-grade, and suitable for prototyping using FDM/SLA 3D printing, with the option to later move some parts to CNC or injection molding.

The microscope should include the main frame/body, optical tube support, objective turret, focusing mechanism, X-Y stage, sample slide holder, camera/sensor mounting area, illumination mount, and all required brackets, fasteners, knobs, gears, rails, and moving parts.

Key design requirements

1. Production-ready and 3D printable
• Parts must be designed for real-world 3D printing, not just rendering
• Include proper wall thickness, fillets, screw bosses, threaded inserts, clearance gaps, and support-aware geometry
• Split the model into printable components that can be assembled with common screws, heat-set inserts, rods, springs, and bearings where needed
• Avoid overly fragile parts or geometry that cannot be printed reliably
• Design should be strong enough for repeated use during prototype testing

2. Movable mechanical assemblies
The CAD must include realistic motion and constraints for:
• Coarse and fine focus knobs connected to a rack-and-pinion or lead-screw style focusing mechanism
• Vertical Z-axis focus movement for the optical head or stage
• X-Y translating stage platform for slide positioning
• Objective lens turret with indexed rotation and realistic mounting positions
• Optional height adjustment or leveling features for the stage if mechanically practical

3. Optical and device layout
Please leave proper mounting areas for:
• Objective lenses
• Camera module or microscope sensor
• LED illumination system
• Sample slide holder
• Wiring channels or small electronics compartments if needed
• Future enclosure or cover panels

4. Engineering quality
• Fully editable parametric CAD assembly
• Clearly named parts and sub-assemblies
• Mechanical mates/constraints for all moving parts
• Travel limits for focus and stage motion
• Clash-free motion between parts
• Reasonable tolerances for 3D printing and assembly
• Design should be modular so parts can be replaced or improved later

5. Deliverables
• Native editable CAD files: SolidWorks, Fusion 360, Inventor, or similar
• STEP export of the full assembly
• STEP files for individual printable parts
• STL or 3MF files ready for 3D printing
• Basic 2D drawings or dimensioned screenshots for key parts
• Exploded assembly view
• Bill of materials listing screws, rods, springs, bearings, inserts, lenses, and other off-the-shelf parts
• Short PDF or screen-capture walkthrough explaining how the focus mechanism, X-Y stage, and objective turret work

6. Important notes
I will review the model by checking whether the parts can actually be printed, assembled, and moved. Please do not create a decorative model only. I need a practical mechanical CAD design that can become a real prototype.

Experience with microscopes, optical instruments, lab devices, camera mounts, precision mechanisms, 3D-printable product design, or medical-device-style enclosures would be very helpful. Please include any relevant sample work, especially functional assemblies with gears, sliding stages, focusing mechanisms, or precision movement.