Frequently Asked Questions
Everything you need to know about agentic AI CAD, parametric models, exports, and custom builds.
What is Prompt2CAD?
Prompt2CAD is a browser-based agentic AI CAD workspace for custom-built objects. Brief the agent on what you want to build, and it plans the structure, creates parametric geometry, inspects the result, and refines the same model with you. You can adjust dimensions, create geometry-grounded renders, and export to standard CAD and 3D formats in one browser tab.
Who is Prompt2CAD for?
Prompt2CAD focuses on people designing custom-built objects: furniture and cabinetry designers, built-in and wardrobe specifiers, DIY and workshop builders, and product or retail-fixture designers. Mechanical engineers and hardware developers also use the same general-purpose CAD agent for brackets, enclosures, and assemblies. The common thread is needing adjustable, dimensioned geometry rather than a decorative mesh.
Why can't I just describe furniture directly to an AI image generator like Nano Banana?
AI image generators are trained on images, not geometry. They fill in proportions, hardware, and details based on what they've seen — which rarely matches your exact vision. More broadly, the typical furniture design workflow stitches together 3–4 separate tools (sketching, 3D modeling, AI rendering, CAD export), and each handoff loses fidelity. Prompt2CAD collapses this into one session: you get a precise parametric model that anchors the renderer to your specification and exports directly to CAD formats.
How does Prompt2CAD improve AI rendering results?
Prompt2CAD generates a precise parametric 3D model from your description. You can export a rendering of that model — or provide it as a depth/geometry reference when using tools like Nano Banana — so the AI renderer has an exact structure to follow. The result is a photorealistic image that matches your design rather than an AI hallucination. This lets you produce and compare dozens of material and lighting variations in the time it would take to set up a single render manually.
Can I trust the dimensions? Precision is critical for my work.
The AI respects the dimensions you specify and verifies its own work by taking screenshots from multiple angles. For most designs, dimensions are accurate. However, in long iterative sessions (50+ messages), earlier constraints can occasionally drift — a known limitation we are actively fixing. If you notice a dimension has changed, tell the AI to correct it and it will. We are building a dimension-locking feature that will let you pin critical measurements so they cannot be altered by subsequent edits.
Do I need CAD experience to use Prompt2CAD?
No. You describe what you want the same way you'd explain it to a colleague or a carpenter — "a workbench 9 feet wide with a miter-saw mount in the center" or "a walk-in wardrobe, left wall 2.9m, right wall 3.18m, sloped ceiling." The AI handles geometry, dimensions, materials, and structural logic. Refine conversationally: "move the wheels back a bit," "add a drawer at the bottom," "make the shelves thicker." Prompt2CAD also works in multiple languages.
What can it design?
Prompt2CAD is strongest with custom-built objects made from clear geometric forms: wardrobes, bookshelves, kitchen runs, desks, cabinets, storage walls, workbenches, retail fixtures, product enclosures, and mechanical brackets. Organic sculpture, characters, and highly freeform upholstered shapes are less suitable because the product is built for precise CAD geometry rather than artistic mesh generation.
Can I use Prompt2CAD for non-furniture objects?
Yes. Custom furniture, built-ins, and maker projects are the current product focus, but the CAD engine is general-purpose. Users also design retail fixtures, product trays, mechanical brackets, electronics enclosures, and other functional objects. Clear dimensions, relationships, and constraints help the agent produce a stronger result.
What are parametric models?
Parametric models are driven by adjustable parameters — width, height, number of shelves, door style, etc. Change a parameter via a slider or number input, and the entire model recalculates and re-renders instantly. This lets you explore design variations without starting over.
Can I upload reference images?
Yes. You can paste or upload images into the chat. The AI uses them as design inspiration — it will analyze the style, proportions, and features and incorporate them into the model.
What export formats are supported?
Seven formats: STEP (.step) for CAD interchange (Fusion 360, FreeCAD, SolidWorks), DXF (.dxf) for CAD software, DAE (.dae) for SketchUp Free with materials intact, OBJ (.obj + .mtl in a .zip) with full material definitions, STL (.stl) for 3D printing, GLB (.glb) for web visualization, and PNG (.png) for viewport screenshots.
Can Prompt2CAD generate a cut list?
Yes. Prompt2CAD derives a preliminary cut list or BOM from explicitly modeled physical parts, with stable part IDs, grouped quantities, length, width, thickness, materials, and CSV export. You can open it from the model or ask the agent to show it. Verify the list before cutting; edge banding, grain direction, hardware schedules, joinery allowances, nesting, and machine toolpaths are not included.
How much does Prompt2CAD cost?
New users get 160 free credits to try their first design. AI chat is charged by actual token usage: a new design is typically around 100 credits, while a refinement is typically around 50 credits. Complex or long sessions can cost more. When you need more, top up with $10 for 1,000 credits. No subscription required.
Where are my designs stored?
Designs are stored locally in your browser and persist across sessions. Signed-in projects can also sync to your account so you can reopen them later. To share a design for review, quoting, or downstream detailing, export it to STEP, DXF, or another supported format.
Can the AI see the 3D model it's building?
Yes. The agent takes screenshots of the viewport, typically from multiple angles, to inspect its work. If something looks wrong, it can read the geometry code, identify the issue, and revise the model iteratively.
What AI model powers Prompt2CAD?
Google Gemini, accessed through the Google GenAI API. The agent is equipped with planning, geometry, material, inspection, and editing tools for parametric CAD across custom furniture, built-ins, products, and functional parts.
Do I need to install anything?
No. Prompt2CAD runs entirely in your web browser. There's nothing to download or install — just visit prompt2cad.com and start designing.