Describe a part in plain language. The agent asks what it needs, builds it, and hands you editable, manufacturable files — frontier engineering, at your fingertips.
STEP · STL · DXF — real units, real tolerances
How it works
An agent that asks what it needs, builds the model, and refines until the geometry holds up.
Plain language — the way you'd brief a person. Give it dimensions, fits, and standards, or just the idea.
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.
Download editable CAD (STEP) and print-ready meshes (3MF/STL).
Manufacturability, built in
You describe the part — nothing about printing. The agent works out load paths, wall thickness, the weak link, the right orientation. It builds intelligently and explains its decisions in plain terms.
Printing
Assembly — one order
The thread is a 50 × 5 mm-pitch profile with 45° flanks, so it self-supports and turns by hand.
Quick load-path analysis, quantized walls, and support-free orientation — plus the filament and layer-height calls that make an FDM part strong, and a flag on the weak link you might want to tweak.
Anisotropic-stress and grain-direction labels, pieces sized to your stock, and clean per-panel files ready to cut
Examples
Every part here was described in a sentence. Interact with the model and download the actual file.
Prompt
“A 12-inch-tall decorative vase with a wavy, sine-wave silhouette — it swells from a 6 in diameter base out to an 8 in belly, pinches in to a 3 in neck, then flares back out to a 4.5 in rim. Wrap the surface with 16 vertical wavy flutes, and twist the flutes by a sine function of height: they wind one way, then smoothly reverse and wind back the other way up the vase. Hollow, 3 mm walls, open top.”
Organic, recursive geometry that's tedious to model by hand — best taken as a printable mesh.
Prompt
“A honeycomb pendant lampshade for a hanging bare-bulb light. The shade is a 20 cm tall cylinder, 14 cm across. Its whole wall is a honeycomb lattice so it casts hexagonal light patterns. At the top the shade cones inward to a collar that slips over the bulb socket, and a knurled ring threads onto the collar and squeezes it tight around the socket. The bottom stays open so I can change the bulb from underneath.”
Two parts — the honeycomb shade and the knurled ring that threads onto the collar. Hit Exploded view to see how they come apart.
Prompt
“A laser-cut monitor stand from 6 mm plywood. I want my screen to sit 10 cm higher on the top panel of the stand. The top face is held up by three sides, all finger jointed together, with the top panel overhanging all sides. The front and the bottom are open, so it sits flat on the desk and I can put stuff in the cubby underneath. Engrave 'CAD that speaks your language — LexiCAD' on the front part of the top panel.”
Four laser-cut panels, finger-jointed. Explode it to see the joinery, or open the cut files to see each flat profile.
Prompt
“A screw-apart payload bay for my model rocket, sized to fit an airframe tube with 38 mm inner diameter and 44 mm outer diameter. It splits into two halves with a thread in between so I can load an altitude sensor inside. Add a coupler on each end so it joins with the body tube and the nose cone, which I will glue on.”
Two halves that thread together — the thread is the mechanism. Hit Exploded view to unscrew them.
Why it's real
Built on real CAD geometry
Every part is a true BREP solid — the same exact geometry professional CAD is built on. Say 45 mm and it comes out 45 mm.
Editable STEP solids
Open and edit the geometry in your own CAD, the same as any other model.
Print-aware
LexiCAD accounts for overhangs, wall thickness, and your nozzle diameter — automatically optimized for printing.
Outputs & formats
Editable, parametric-ready CAD. Opens in Fusion, SolidWorks, Onshape — anywhere.
Print-ready meshes for any slicer, in whatever your workflow prefers.
Laser-cut profiles — one DXF/SVG file per profile, ready to cut.
FAQ
Parametric mechanical parts — brackets, enclosures, fixtures, mechanisms — plus algorithmic geometry, laser-cut profiles, threads and gears. It can work from your existing files and produce technical drawings. Large multi-part assemblies are still limited.
It builds to the exact dimensions you specify — real units, real tolerances, not an approximation. Say 45 mm and the part comes out 45 mm.
You get real, editable CAD — a STEP file you can open and modify in your own tools, not a frozen mesh. You can also edit parameters directly in LexiCAD.
It tells you. If a request is beyond what it can do well, or a design would be unmanufacturable, it says so plainly and explains why — rather than handing you a file that looks right and fails on the printer.
A general chatbot is a generalist — ask it for a part and it will try, usually by handing you a script to run yourself. It works blind: it can't render or measure what it made. LexiCAD is the specialist — it writes and runs real CAD code, renders the result, measures it against your spec, and iterates until the model holds up. You get a finished, manufacturable STEP, not an unverified attempt.
Lincoln Clarke — Founder
Penn M&T · Electrical engineering & Wharton
I work at the intersection of computation and the physical world.
More of what I've built is on lincolnclarke.com.
Reach me directly at lincoln@lexicad.com.
Launching soon
Drop your email and I'll let you know the day LexiCAD goes live.
Building something serious?
If you're a maker, engineer, or shop with real parts to make, I'd rather talk than add you to a list. Email me directly at lincoln@lexicad.com and tell me what you're working on — the power users are exactly who I want to hear from.