3D Printing Site, Viewer, Quoter

I run a 3-D modelling and printing service that focuses on consumer products, and I’m ready to take ordering online. I need a full website—from front-end interface to back-end logic—that lets visitors upload their model, preview it in an embedded 3-D viewer, and receive an instant price approximation based on material choice and overall size.

Core requirements
• Uploads must accept STL, OBJ and STEP files without size glitches or timeouts.
• The instant quote only has to cover basic material and size estimation for now; no multi-material or demand-driven pricing logic is necessary.
• An interactive viewer (Three.js, Babylon.js, or similar WebGL library) should render the uploaded model so users can rotate, pan and zoom before ordering.
• Clean UI on desktop and mobile, with simple steps: upload → preview → get quote → proceed to checkout (checkout can be a stub; the focus is on the first three steps).
• Admin area where I can adjust material rates and review incoming files.

Deliverables
1. Fully-functional, responsive website with branded styling.
2. Secure upload handler, file storage and size/material parser that feeds the quoting algorithm.
3. WebGL viewer integrated into the same page or a modal.
4. Admin dashboard with editable price table.
5. Documentation for deployment and future maintenance.

Acceptance criteria
• Uploads of STL, OBJ and STEP up to my hosting limit parse correctly and display in the viewer within 10 seconds on a standard connection.
• Quoting algorithm outputs a price every time based solely on the volume detected and the rate I set.
• No console errors in the latest versions of Chrome, Firefox and Safari.
• Source code and build instructions delivered, with ownership transferred.

If you’ve built similar quoting tools or WebGL viewers, I’d love to see a link or short demo when you bid.