3DJ — Parametric CAD & 3D Generation Studio

A Neural Deep Network Ltd production · Rough concepts to CAD-grade, print-ready STEP geometry.

What is 3DJ?

3DJ is a browser-first engineering studio combining code-first parametric CAD (OpenCascade B-Rep via Replicad), photo-to-measured CAD with caliper constraints, and a resilient multi-provider 3D mesh fleet (TRELLIS.2, Hunyuan3D-2).

  • Parametric Script CAD: TypeScript sandbox, interactive parameter controls, real fillets, chamfers, and native STEP + binary STL export. 100% offline, in-browser WebAssembly.
  • Photo → Measured CAD: Sub-pixel contour and bore tracer with 100% bilateral mirror symmetry by construction, verified back against physical caliper readings.
  • DfAM & Print Verification: Automated 5-point checks: watertight manifold geometry, minimum wall thickness, overhang angles, build volume limits, and material mass estimation.
  • AI Agent MCP Layer: Native remote Model Context Protocol (MCP) server at POST /api/mcp for autonomous agent design and inspection workflows.

How 3DJ Compares to Similar Tools

Feature 3DJ Studio Meshy 3D Tripo3D Fusion 360
Geometry Kernel Parametric B-Rep (OpenCascade / Replicad); True STEP solids Triangle mesh only; faceted approximation Neural SDF mesh; uncalibrated curvature Desktop B-Rep; heavy 2GB+ installer
Photo-to-CAD Sub-pixel tracer + 100% mirror symmetry + caliper constraints Blobby monocular depth mesh deformation Unconstrained single-image neural mesh Manual canvas calibration & sketch tracing
DfAM Print Pre-Flight Automated closed solid, wall thickness, overhang & bed checks Basic mesh hole filling only Raw mesh with frequent non-manifold edges Manual inspection; separate slicer required
AI Agent MCP Server Native remote Streamable MCP at POST /api/mcp Standard REST only, no MCP discovery Proprietary REST API Desktop local Python automation
Pricing & Offline Free local CAD; Maker €19/mo (7-day trial); Studio €49/mo $32/mo subscription; no offline mode $19.90–$199/mo credit packs $85/month or $680/year per seat

Frequently Asked Questions (FAQ)

What export formats does 3DJ provide?
Native STEP (AP214 / AP203) parametric solid CAD files, binary watertight STL files for 3D printing, and GLB/glTF for 3D web viewing.
How do autonomous AI agents access 3DJ?
External AI agents connect via remote Streamable-HTTP MCP at POST https://3dj-neuraldeepnet.on.adaptive.ai/api/mcp with an API key generated in the Agents view.
Can I run 3DJ without internet or GPU credits?
Yes. Parametric Script CAD runs entirely in your browser client via WebAssembly and Web Workers. It consumes zero cloud credits and operates offline.
Who owns the intellectual property of created models?
You own 100% of the commercial rights to all generated CAD scripts, STEP files, and physical 3D prints produced from 3DJ.