Every part here was described in plain language. Turn the model, measure it and cut a section through it.
3D printed
Cat window clip
Prompt
“Make a clip that snaps onto two slats of my blinds and bows them apart into a 15 cm wide opening so that my cat can look out the window. The slats are 25 mm wide curved aluminium, 21 mm apart.”
Photorealistic render
How it works
Describe it. The agent does the engineering.
An agent that asks what it needs, builds the model, and refines until the geometry holds up.
01
Describe it
Plain language, the way you'd brief a human designer. Give it dimensions, fits and standards, or just the idea.
02
The agent works
It asks what it needs to know, builds the model, and checks its own work, measuring the result against your spec until it's right.
03
Outputs ready-to-make files
Download editable CAD (STEP) and print-ready meshes (3MF and STL).
Manufacturability, built in
LexiCAD thinks about how the part gets made.
You describe the part, nothing about printing. The agent works out load paths, wall thickness, the weak link and the right orientation. It builds intelligently and explains its decisions in plain terms.
Strength and printability
Quick load-path analysis, quantized walls and support-free orientation, plus warnings when your instructions lead to a fragile part.
Laser-cut, done right
Anisotropic-stress and grain-direction labels, pieces sized to your stock, and clean per-panel files ready to cut.
Features
What LexiCAD can do, including what you might not think to ask for.
What the agent can design
Parts to 3D printBrackets, enclosures, holders, replacement parts.
Assemblies that moveGears, hinges, cranks, slides, snap fits.
Threads and knurlsThreads that fit real bolts, and knurled grips.
Standard partsPlaced as references to check the fit, such as bearings.
From what you haveA sketch, photo, drawing or model.
Text on a partEngraved or raised, in a font you pick.
Laser cuttingFinger-jointed and slot-together boxes and furniture, sheets laid out.
Technical drawingsDimensioned, ready to print.
What the app can do
Parametric editsChange a value and the model rebuilds, no AI.
Look inside the modelMeasure, section, explode, check walls and overhangs.
Every version keptGo back to any version, or branch from one.
Export3MF, STL, STEP, DXF, SVG, PDF.
Share by linkView only; downloads and chat if you allow.
Draw what you meanA sketchpad beside the message box.
Choose how much to spendPick the model tier and a budget cap.
An email when it's readySent when a build finishes.
Slicing
Print files, ready to sendExports .gcode.3mf for Bambu Lab and .gcode for other printers. Bambu LabCrealityUltiMakerPrusaSnapmakerFlashforgeAnycubicElegooSovolLonger
Renders and animations
Photorealistic rendersAny view, size and quality.A thrust-vectoring nozzle.
AnimationsTurntables and mechanisms in motion.A tracked rover driving forward, played in your browser. Switch between Shaded with edges and Edges only.
FAQ
What is it good at, and what isn't it for?
Mechanical parts: brackets, enclosures, fixtures
Whole assemblies: gearboxes and mechanisms
Robots, with motors, bearings and screws placed to check the fit
Threads, gears and algorithmic geometry
Laser-cut objects laid out on your sheets
Designs from your sketches, photos and existing files
Technical drawings, photorealistic renders and animations
Characters and figurines
How accurate is it?
It builds to the exact dimensions you specify: real units, flat faces, not an approximation. Say 45 mm and the part comes out 45 mm.
Can I edit the result, or am I locked into the AI's output?
You get real, editable CAD: a STEP file you can open and modify in your own tools, not a frozen mesh. You can also change a design's parameters directly in LexiCAD, and it rebuilds.
How is this different from asking ChatGPT?
General assistants like ChatGPT and Claude are capable: they can write CAD code and even run it. What they don't do is give you a manufacturable part reliably. They sometimes check their work and sometimes don't; when I asked ChatGPT for a bench vise, the handle passed through other parts and the jaw floated in mid-air, and nothing flagged it. LexiCAD is built for this one job. It carries the know-how of designing parts that get made: walls thick enough to print, overhangs that don't sag, threads shaped to print cleanly, assemblies that can actually be put together, laser-cut parts laid out on the sheets you have. And the checking isn't optional: every design is built, inspected and measured against what you asked for, and reworked until it holds up, every time. Around that you get the tools a chat window doesn't have: a 3D viewer where you can measure the part and cut a section through it, a version history you can rewind, and real STEP, STL and DXF files at the end.
