Click select · drag gizmo to edit · W move · E rotate · R scale · Del delete · Scroll-Zoom in/out
Printer & bed
Parameters
Name your measurements (like wall = 2.4), then type formulas such as width - 2*wall into any position, size or rotation box. Change a parameter and every part that uses it follows.
Selected
Nothing selected.
Transform
X
Y
Z
X
Y
Z
X
Y
Z
Actions
Mirror copy:
Array
Arrange (2+)
Distribute
Combine
Objects (0)
No objects yet.
Load a saved design
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Shapes library
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Thread
Common: M3 ×0.5 · M4 ×0.7 · M5 ×0.8 · M6 ×1.0 · M8 ×1.25 · M10 ×1.5. Length is the threaded part (Nut uses it as thickness).
Add 3D text
Image / QR emboss
Grid resolution (image only). Higher = finer but heavier.
Choose an image or enter QR text.
Save picture or turntable
From the current camera angle, showing only the model — no grid, bed or handles.
A transparent background works for the PNG picture; videos and GIFs use the dark background.
✨ AI generate model
Sending your request…0 s
Designs the model from your description — curves, hollows, handles, text and holes — and it lands on the bed as editable parts. Say sizes in mm for exact results. A detailed model can take a minute or two.
0parts
Each piece is now a separate object in your scene. Download them individually or as one ZIP, and print them on any printer. Pins/sockets (if enabled) line the pieces up for gluing.
Scene layout:
Gear calculator
or
Maker
Gear demos
Ready-made gear designs. Open one, then use Create → Gears → Turn the gears to see it work — and change anything you like.
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Open design file
Scrap Pad
Model Preview
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What's new
New: print models bigger than your printer
11 Oct 2026
Latest
The Big Model Splitter cuts a statue, doll or character into pieces that fit your bed, with pins to put it together.
Big Model Splitter: drop in an STL, 3MF or OBJ, choose how tall it should be, pick your printer, and it is cut into pieces that each fit your bed. Free with a free account.
Pins that line it up: every cut gets matching holes on both sides and the pins come as their own part to print (with spares), so the pieces go together straight before you glue them.
Solid or hollow: print it with infill, or as a light hollow shell that saves filament and time. See how many grams it needs, then download STL files or 3MF files with the settings already set.
In the 3D Designer too:Cut & split → Split for printing now makes clean pieces that slice without repairs, with pin holes and the pins.
The 3D Designer and 3D Previewer, free on Windows and Mac
9 Oct 2026
Both desktop apps are now free to download and use, on Windows and now on Mac too.
3D Designer app: the whole designer in its own window, free with a free account (2 saves and 2 STL exports a day). Download it here.
3D Previewer app: see every STL, 3MF, OBJ, FBX, GLB and glTF in a folder with real 3D thumbnails, free. Download it here.
Unlock for life, one payment: the 3D Designer or the 3D Previewer for $15 each, or both for $25. The Designer unlock adds 30 AI models a month for the first year. It works on Windows and Mac.
Supporters already have everything in the 3D Designer app, nothing to buy.
New Honeycomb Wall parts, in the 3D Designer too
9 Oct 2026
Snap-fit hooks and holders, heat-set inserts, ring holders and an arm rack for the Honeycomb Storage Wall.
In the 3D Designer:Create → Honeycomb Wall makes inserts, hooks, shelves, bins, tool holders and arm racks right next to your own design, ready to join to it.
Snap-fit: hooks, shelves, bins and holders can now click straight into a wall cell, with no separate insert. Padded adds a flange for a wider face.
Heat-set inserts (M2 to M5) for screwing your own holders on, and inserts of two, three or four cells bridged together.
Tool holders with rings of any size, rectangular frames or snap-in clips, and an arm rack for tape rolls, spools and cables. All on the Honeycomb Wall page.
New: the book, From Idea to Print
7 Oct 2026
A step-by-step guide for beginners to 3D design and 3D printing, with the tools on this site.
From Idea to Print: 107 pages and 14 projects, from your first calibration cube to gears that turn, a photo lithophane and a spiral vase, with a screenshot for every step.
Read the first pages free, no account needed: the free sample is on the book’s page.
Free with Supporter and Supporter Plus, yours to keep. Already supporting? It is waiting on your account. Or buy it on its own for $15.
Every project’s files to download, and every project works on a free account.
New: Hanging Lithophane Light
7 Oct 2026
Your photo in a lamp shade — a bell, a dome, a lantern or your own shape — ready for a lamp holder.
New: Hanging lithophane light (menu: Lithophane → Hanging light). Nine shapes to start from — bell, dome, lantern, tulip, vase, pear, drum, cone, cylinder — and nine diameters to make it your own.
See it lit: switch the light on in the 3D preview and watch your photo glow through the shade before you print it.
Ready to hang: a top with a hole for an E27 or E14 lamp holder, a cord, or your own size. It prints mouth down with no supports.
Beta testers first: while we test it on real printers it is open to beta testers, with no daily limit. Send us a photo of your print and earn Supporter Plus days.