PrintPal's AI CAD Modeler turns your ideas into precise, editable 3D models in seconds — no complex CAD software to learn. Adjust any dimension, preview instantly in your browser, and export production-ready files for printing, Fusion 360, SOLIDWORKS, and beyond.
Every model below is a working OpenSCAD script the agent has generated for real visitors. Open any one of them to keep iterating with chat, tweak the parameters, and export.
Inert exterior scale replica — tapered seeker nose, canard + tail fin sets, rolleron tip housings, and surface detail down to the rivet bands. Every collar, band, and fin is a parameter.
Vented enclosure sized to the Pi 5 board — standoffs on the 58 × 49 mm hole pattern, cutouts for USB / Ethernet / micro-HDMI / USB-C, and a slot vent bank. Resize the board, the case follows.
Real involute teeth via the BOSL2 part library — not a hand-modeled mesh, not a fake glamour-shot gear. One function call generates a manifold solid you can print.
Backward-curved impeller — 12 sinusoidally-tapered blades swept from hub to rim, with filleted roots and a through-bore. Pure function-driven geometry, no hand-modeled mesh.
Free in-browser rendering and export. AI generations metered as pay-as-you-go credits.
Mesh AI is great for figurines. Parametric AI is what you need for parts that have to fit, mount, screw, or print to spec.
The agent is vision-capable. Hand drawings on graph paper, screenshots from a Google search, photos of a broken bracket on your workbench — anything that shows the shape works.
After every generation a 4-view technical sheet of your model goes back to the agent automatically — so on the next turn it can compare what it built against your reference and refine without you having to nudge it.
The interface borrows what Cursor got right for code, then bends it around a 3D viewer and an OpenSCAD compiler.
Plain-English prompts in, fully-parametric OpenSCAD code out. The agent maintains a design brief and a per-turn checklist so you can see what it intended to build.
Every named feature gets a // @feature: name tag in the code. Reference them in chat with @feature[name] or click the chip to highlight the geometry in 3D.
OpenSCAD compiled to WebAssembly. Every edit re-renders in milliseconds, with no server roundtrip — your code never leaves your machine until you press Generate.
Compile errors get silently re-prompted and repaired. When you attach a reference image, a self-critique pass compares the render to your image and refines.
Every project autosaves. Browse, search, rename, and reload any past session — chat, code, viewer settings, and the design contract all come back exactly as you left them.
Drag primitives onto a 3D canvas, OR drop into raw OpenSCAD. Switch freely — the agent picks up your hand-edits on the next turn without losing context.
STL and 3MF for slicers, STEP (real AP214 faceted BRep) for downstream CAD work, OFF for academic tools, and the raw .scad source for OpenSCAD users.
Drop a sketch, hand drawing, or photo. After each generation, a 4-view sheet of your model goes back to the agent so it can compare against your reference.
Drop in a hand drawing, a photo of an existing part, or a napkin sketch — the vision-capable agent reads it, asks any clarifying questions, and writes the parametric code to match.
Tell it what to change. It generates, repairs compile errors silently, measures its output against the brief, and only stops when the part is actually printable. You see what it did, every step.
If the generated OpenSCAD doesn't compile, the agent re-prompts itself with the failing program and the error, repairs it, and tries again — bounded loop so a chatty model can't spin forever.
After every render the actual bounding box is compared against the envelope the agent committed to in the brief. You see the diff. The next turn knows about it.
Watertight check, manifold check, and a minimum wall thickness pass run on every render. Non-printable geometry surfaces as a warning the agent can address in the next turn.
Before the agent writes a single line of code, it produces a design brief — units, origin, envelope, features, defaults adopted. Then it produces a checklist of what it'll build, item by item. Then it builds it.
After the render, the brief's committed envelope is compared against the actual bounding box. If you said "120 × 30 × 30 mm shaft" and the model came out 122 × 30.4 × 30, you'll see a mismatch warning — and the next turn knows about it.
No install, no CAD seat. Open a tab and start describing.
Type plain English ("M3 cable clip, 18 mm long, snap-fit"). Optionally drop a sketch or photo. The agent asks clarifying questions only when it has to.
The agent generates editable OpenSCAD, renders it instantly, and shows you the brief + checklist. Refine in plain English ("make the clip 2 mm thicker, add a strain-relief").
One click downloads STL or 3MF for your slicer, STEP for Fusion / SOLIDWORKS / Onshape, or the raw SCAD source so you can keep iterating outside the browser.
Real files. Real schemas. Real STEP — not a renamed STL.
All exports run client-side via OpenSCAD WebAssembly. Hits no server, costs no credits. The STEP exporter emits proper MANIFOLD_SOLID_BREP entities so files import cleanly into Fusion 360, SOLIDWORKS, Onshape, FreeCAD, NX, and Creo.
If the thing you're making has a hole that needs to clear a specific screw, a face that needs to mate with an existing part, or a slot you'll machine in aluminum next week — this is for you.
Brackets, mounts, jigs, fixtures, sensor housings, motor adapters. Edit dimensions with a slider, then hand the STEP to a machinist or your CAD assembly.
Parametric printable parts you can re-customize for every print. No more "generate a new STL from scratch every time the screw size changes."
Skip the week-long CAD bring-up for v0 enclosures, breadboard mounts, and prototype housings. Get to the test fixture today, refine in CAD tomorrow.
Students describe what they want, see the OpenSCAD that generates it, and learn parametric thinking by tweaking code instead of fighting menus.
A pair-programmer that knows BOSL2 idioms, manifold backend quirks, and how to write code you'd actually be willing to commit. Auto-fix has your back on compile errors.
Customer sends "I need a custom phone mount for X bike, with Y mounting holes" — turn it around in two chat turns and export print-ready 3MF.
Traditional CAD lets you click a face and address it directly. Mesh AI tools lose that — every edit is "regenerate the whole model from scratch." We bring it back, OpenSCAD-style.
The agent inserts // @feature: name comments above named feature groups. Click the chip to highlight that feature in bright orange in the 3D viewer. Type @feature[name] in chat to reference it across turns — even after the surrounding code has been rewritten.
Mirrors the FAQPage JSON-LD above — both source from the same answers.
Open the modeler, describe your part, and you'll have a printable file before you finish your coffee.
Free to render and export · Pay only for AI generations · Cancel any time