# Lovcad > Lovcad is a browser-based AI CAD generator that turns text descriptions into editable, dimensioned 3D models. Create parametric parts, refine them through conversation or parameter controls, and export CAD files for further design, 3D printing and engineering review. Lovcad serves makers, engineers and product designers working on parts such as brackets, flanges, housings, gears and assemblies. A useful starting description includes the part's purpose, overall dimensions, hole sizes and positions, wall thickness and intended manufacturing process. Dimensions use millimetres. Key product facts: - Text to CAD: describe a part in everyday language. The agent asks about missing key dimensions, generates model source and checks views of the result. Users can edit the source or adjust exposed parameters. Parameter changes rebuild locally without a new AI request. - Mechanical part mode: Replicad creates exact solid geometry and exports exact-surface STEP for continued work in CAD applications such as SolidWorks or Fusion. This mode supports engineering drawings. A STEP file does not preserve Lovcad's editable source or parameter controls. - Geometric shape mode: OpenSCAD supports boolean and mesh forms such as lattices, cut-outs and decorative parts. STL and 3MF support slicer workflows. STEP from this mode is a mesh solid, not the exact-surface STEP produced by mechanical part mode. A project's modelling mode is fixed at creation. - Reference inputs: sketches, photos and PDF drawings can accompany a request. Existing STEP parts can be imported and modified in mechanical part projects. STEP import preserves solid geometry, not the original CAD feature history. - Engineering workflow: mechanical parts support drawings exported as PDF, DXF or SVG, material-density-based mass estimates, and bounded CNC, FDM and injection-moulding checks. Projects can keep named parameter configurations and requirements for dimension checks. - Export choices: STEP, DXF, SKP, FBX, DAE, OBJ, STL, 3MF, GLB and a PNG of the current view are available across the two modes; glTF is available for mechanical parts. Geometry and editability depend on the modelling mode and file format. - Browser execution and account storage: CAD computation, previews and exports run on the user's device. AI requests go to a model provider. Model source, parameters, conversations and model files are saved privately to the user's account. Wait for cloud-save confirmation before switching devices; unsynced changes remain dependent on the original browser. Generated geometry and automated checks require review. Exact geometry does not guarantee correct dimensions, fit, strength or manufacturability. A passing check covers only its stated conditions. Public examples demonstrate reproducible builds, not an AI success rate or manufacturing certification. The public website is available in English and Simplified Chinese. Opening a workspace requires sign-in. Current subscription prices, credit allowances and purchase conditions are published on the pricing page. Product support: support@lovcad.com. ## Product and workflow - [Lovcad - text to CAD](https://lovcad.com/): Official product overview, two modelling modes, engineering workflow and frequently asked questions. - [AI CAD generator](https://lovcad.com/ai-cad-generator): Choose Mechanical part, Geometric shape or Start from a STEP file. Explains project creation, reference inputs and the describe-review-export workflow. - [Text to CAD guide](https://lovcad.com/#text-to-cad): What text to CAD means, how the two engines work, how to write a dimensioned prompt and which export to choose. - [How Lovcad works](https://lovcad.com/#workflow): Reference images, design briefs, iterative modelling and account-backed project continuity. - [Export formats](https://lovcad.com/#formats): File formats for CAD applications, slicers and presentation tools. See the modelling-mode explanations and FAQ for exact-surface versus mesh STEP. - [Frequently asked questions](https://lovcad.com/#faq): CAD experience, STEP compatibility, source editing, reference inputs, local execution, cloud saves and checks before manufacturing. - [Pricing and credits](https://lovcad.com/pricing): Current subscription plans, monthly and annual billing, design packs and renewal conditions. ## Reproducible CAD examples - [Example gallery and downloads](https://lovcad.com/#examples): Three original, source-built examples. Each has a STEP model, drawing PDF, source and evidence manifest from the same build. - [Six-axis robot arm evidence](https://cad-assets.lovcad.com/site/84f7b6112f3acbd93089/examples/six-axis-arm/manifest.json): An eight-part assembly on six revolute joints with a 300 mm upper arm, a 250 mm forearm and a parallel gripper. JSON records per-part volumes, the part clearance check, STEP round-trip results and file SHA-256 hashes. - [Planetary reducer evidence](https://cad-assets.lovcad.com/site/84f7b6112f3acbd93089/examples/planetary-reducer/manifest.json): A 5:1 planetary reducer with module 2 involute gears (12-tooth sun, three 18-tooth planets, 48-tooth ring) in a bolted housing. The manifest records the gear-mesh clearance check, per-part volumes and downloadable files. - [Centrifugal impeller evidence](https://cad-assets.lovcad.com/site/84f7b6112f3acbd93089/examples/centrifugal-impeller/manifest.json): A 120 mm impeller with seven backward-curved blades, seven splitters and a 16 mm keyed bore. The STEP model and drawing come from the same solid; the manifest records checks, limitations and file hashes. ## Simplified Chinese pages - [Lovcad homepage in Simplified Chinese](https://lovcad.com/zh/): Generate parametric 3D CAD models from natural-language descriptions. Covers mechanical parts, geometric shapes, STEP exports and engineering drawings. - [Text to CAD guide in Simplified Chinese](https://lovcad.com/zh/#text-to-cad): How to describe a part's purpose and key dimensions, and choose a modelling mode and export format. - [Pricing and credits in Simplified Chinese](https://lovcad.com/zh/pricing): Current subscription plans, credit packs and renewal rules. ## Optional - [Privacy policy](https://lovcad.com/privacy): Account data, AI providers, project storage and privacy terms. - [Terms of service](https://lovcad.com/terms): Service conditions, billing, cancellation, refunds and responsibilities for generated designs. - [Cookies and local storage](https://lovcad.com/cookie): Browser storage, local caches, unsynced work and cloud recovery. - [Public sitemap](https://lovcad.com/sitemap.xml): Index of public pages and available language variants.