MillmetraStart designing
AI design for 3D printing

Describe it.
Print it. Exact to the mm.

Tell Millmetra the part you need in plain words. Preview it in 3D, tweak any detail, and download a STL tuned to your printer.

Start designing See how it works

No CAD skills needed. Start from words or a photo.

You

A 4:1 planetary gearbox: sun gear, three planet gears, ring gear and carrier, module 1, for a 5 mm motor shaft.

A 4:1 planetary gearbox: sun gear, three planet gears, ring gear and carrier, module 1, for a 5 mm motor shaft.A pan-tilt mount for two SG90 servos with a base, yoke and camera plate, plus M2 screw holes.A two-finger robot gripper with linked jaws and a servo horn adapter, opening 0–40 mm.A hinged case for a Raspberry Pi 4 with a snap-fit lid, print-in-place hinge, vents and port cut-outs.A wall mount for an Echo Dot (5th gen), 3 mm walls, with a cable slot.A wall bracket for a 25 mm pipe, 4 mm thick, with two M4 screw holes.A replacement knob for a 6 mm D-shaft, 30 mm wide, with a grip edge.A desk stand for a phone up to 9 mm thick, tilted at 65°, with a cable hole.An under-desk headphone hook for a 25 mm desk top, 40 mm wide band.A clip that holds three 5 mm cables to the desk edge, with a screw hole.An L-shaped shelf bracket, 120 mm arms, 5 mm thick, with a support rib and three M5 holes.A drawer pull handle with 96 mm hole spacing, 12 mm grip, for M4 bolts.A wall mount for an Apple TV 4K, 3 mm walls, with a vent gap and a cable cut-out.A hose adapter from 32 mm to 25 mm, 60 mm long, with grip ridges.A chrome cube monogram with the letter M and an MILLMETRA nameplate, 60 mm wide, 3 mm raised letters.ratio 4:1m = 1.0
planetary-gearbox.stl · 6 parts

What you can make

Real parts, not just pretty shapes

Millmetra builds from measurements, so what you print matches what you asked for.

Words to exact-mm models

Words to exact-mm models

Describe a part in plain words and get a 3D model accurate to the millimetre.

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Snap a photo, print the part

Snap a photo, print the part

Photograph an object or a broken part and get a printable holder, mount or replacement.

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Shape library & templates

Shape library & templates

Containers, clips, hinges, shelf pegs, hose adapters, glow lamps and device mounts.

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Threads, holes & text

Threads, holes & text

Add real screw threads, holes and lettering to any part — even curved ones.

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Assembly test

Assembly test

Check that two parts fit together before you print either of them.

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Drawings & CNC

Drawings & CNC

Turn your design into a technical drawing or a CNC job.

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  • Tap to edit

    Tap any area of the model and change only that part.

  • Describe the problem

    Explain the job and Millmetra picks the right DIY tool and fills in the sizes.

  • Fit calibration

    Thread, hole, peg and sliding fits saved per printer, material and nozzle.

  • “Did it fit?”

    Tell Millmetra how a print fitted and every future part adjusts.

All features

How it works

From idea to print in three steps

01

Describe it

Write what you need in plain words, or start from a shape in the library.

02

Preview & adjust

Spin the 3D model, tap any area to change it, add threads, holes or text.

03

Export & print

Download a watertight STL tuned to your printer and material, then print.

Your next part is one sentence away.

Works right in your browser. No CAD skills needed.

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