Question 1

What makes 3DJ fundamentally different from tools like Meshy or Tripo3D?

Accepted Answer

Most AI 3D generators produce raw, non-parametric triangle meshes that cannot be edited with precision calipers or machined. 3DJ combines an industry-grade boundary representation (B-Rep) CAD kernel (OpenCascade via Replicad) with targeted AI to output true parametric solids with real fillets, exact dimensions, and native STEP file exports.

Question 2

What is the difference between a STEP file and an STL/GLB mesh?

Accepted Answer

STL and GLB files are approximations made of flat triangles. A STEP file is a mathematical boundary representation (B-Rep) with exact analytical surfaces, radii, and planes that open natively in Fusion 360, SolidWorks, FreeCAD, and Siemens NX.

Question 3

How does Photo-to-CAD achieve 100% mirror symmetry and caliper accuracy?

Accepted Answer

3DJ runs a deterministic sub-pixel contour and bore tracer in a Web Worker, enforcing bilateral mirror symmetry across the reflection plane by construction, and using user caliper readings as hard geometric constraints.

Question 4

What print-readiness (DfAM) checks are performed?

Accepted Answer

3DJ performs automated pre-flight checks: watertight manifold integrity, minimum wall thickness detection, overhang angle analysis, build bed clearance, and mass estimation in grams.

Question 5

How do external AI agents interact with 3DJ via MCP?

Accepted Answer

3DJ natively exposes a remote Streamable-HTTP Model Context Protocol (MCP) server at POST https://3dj-neuraldeepnet.on.adaptive.ai/api/mcp for autonomous AI agents to build models, check fleet health, and download STEP/STL geometry.

Question 6

Does Script CAD require GPU credits or wait in a cloud queue?

Accepted Answer

No. Local Script CAD compiles 100% inside your web browser using WebAssembly and Web Workers. It requires zero cloud compute, costs zero credits, and works completely offline.