AI CAD for people with a 3D printer
Say what you need in a sentence — a bin for your Gridfinity drawer, a case for your Pi — add a photo or your caliper readings, and get a parametric OpenSCAD model, checked for printing, that opens in your slicer with every color on its own filament.
Made from one prompt
Each was built from the prompt on its card with no hand edits, and recorded straight off the app. The time is the whole turn, lookups included.
A Gridfinity bin, 2 × 1 units and 6 units tall, with the standard base so it sits in a Gridfinity baseplate, a stacking lip, a finger scoop along the front and a label tab. Width, depth and height in grid units as parameters.
A case for a Raspberry Pi 5: a base with standoffs on the board's real mounting holes, cutouts for its USB, Ethernet, micro-HDMI and USB-C ports where they really are, and a snap-fit lid with vent slots. Base and lid in two colors, shown as an assembly. Wall thickness, standoff height and clearance as parameters.
A screw-top storage jar for 3D printing: a 70 mm round jar and a lid with a real thread that screws onto it, a knurled grip on the lid, jar and lid in two colors, shown as an assembly. Diameter, height, wall thickness and thread clearance as parameters.
A two-color coaster for a multi-color printer: a 100 mm hexagon with a honeycomb pattern inlaid in a second color, flush with the top so it stays flat, and a raised rim to catch drips. Size, cell size and rim height as parameters.
Made to measure
Say what it has to fit. The agent looks the size up when it's a product with a published drawing, and when it's yours it writes a measuring sheet for your phone: what to measure, with which jaws, how many times.
A laptop stand for my laptop: it holds it at a 15° tilt with the back edge lifted, a lip at the front so it can't slide off, an open middle for airflow and a slot at the back for cables. It has to fit my laptop exactly, so tell me what to measure first.
Drawer bins that fill the top drawer of an IKEA ALEX drawer unit edge to edge: look up the drawer's inside dimensions, split it into a 3 × 2 grid of separate bins with 0.5 mm gaps so each lifts out, rounded inside corners and a finger notch on each. Columns, rows and bin height as parameters.
No assembly
An articulated jellyfish that prints in place: a dome-shaped bell and 8 tentacles, each a chain of linked segments that swing freely once it comes off the printer, bell and tentacles in two colors. Tentacle count, segment count and joint clearance as parameters.
A small box with a hinged lid that prints in place, already assembled: a pin hinge along the back with enough clearance to break free after printing, and a snap latch at the front. 60 × 40 × 30 mm, box and lid in two colors. Size and hinge clearance as parameters.
Hinges, latches and chains that print as one job and move once they come off the plate. The clearance is a slider, so you can tune it to your printer instead of hoping.
Remix
Drop in the STL you found on Printables or MakerWorld and say what's different about yours. The agent measures the mesh, rebuilds it as a program with sliders, and changes what you asked.
I downloaded this end cap from Printables (CC0, "Extension cord holder" by Adam): two of them hold a power strip under a desk. My power strip is bigger, 58 × 42 mm in section, and I want to screw it to the side of a desk leg instead of underneath. Remake it as a parametric part that fits my strip, keeps the original's shape and screw holes, and adds a notch for the cable at one end. Strip width, height and wall thickness as parameters.
Detail and motion
The outline is measured off the maker's own product photo. The pieces are real parts — handle, pawl, a 44-tooth wheel, switching ring, sleeve, bit — and Play runs the mechanism: the ring switches, two strokes click the pawl over the teeth, the sleeve lets the bit out.
Create a Wera ratcheting screwdriver, multicolor. — then: Make it multipart and with motion.
A jack-o'-lantern cover for a tea light, in two colors: an orange ribbed pumpkin shell with a carved face the light shines through, a green stem on top, and an opening underneath that sits over a standard 38 mm tea light. Pumpkin size as a parameter.
This month
The orange shell and its carved face on one filament, the stem on the other, and an opening underneath sized for a standard 38 mm tea light. The agent says to use an LED one — a flame is too hot for PLA.
Made for your printer
The hard part of printing a part you designed is rarely the shape. It's the fit, the thread, the wall the slicer drops, the colors on the wrong filament. That's what VibeSCAD checks.
M3 clearance, a thread pitch, a Raspberry Pi's mounting holes, the Gridfinity base: standards and products are looked up on the web and in BOSL2, not guessed from memory.
Watertight, no zero-thickness skins, no wall thinner than one 0.4 mm line or one 0.2 mm layer. Overhangs, a missing flat base and walls under 0.8 mm come back as advice.
Every color on its own filament, PLA picked, the pieces spread over plates with room for the prime tower. OrcaSlicer reads the same file. Export just the lid, or the part at any slider setting.
Click faces to select, click edges to measure a length, a diameter, an angle or a gap, or paint over an area. “This” is never ambiguous in the next prompt.
Claude, GPT or Gemini with your own API key or through OpenRouter, or a model on your own machine (llama.cpp, Ollama, LM Studio). Pick one per part, and set how hard it thinks.
History with revert on each entry, Ctrl+Z, and “revert this turn”. Hand edits keep the program's comments and layout intact.
Early access
Leave an address and we'll write once, when there's something you can run. Nothing else.