Use the Primitive Shapes STL Generator — Cube
Generate exact watertight primitive shapes (box, rounded box, cylinder, tube, cone, sphere, dome, capsule, torus, prism, pyramid, star.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
A cylinder of radius 8 mm and height 15 mm with an 8 mm bore is a tube with a volume of 2.26 cm³ that weighs about 2.8 g in PLA.Open the Primitive Shapes STL Generator — Cube
Illustration. Open the tool for the real thing.
What is the Primitive Shapes STL Generator — Cube?
Calibration cubes, spacers, test cylinders and blocks are the building blocks of every printing workflow, and downloading a fixed-size STL is never quite the size you need. Choose a shape, enter exact dimensions and download a watertight, correctly oriented solid that sits flat on the bed.
Thirteen shapes are included: box, rounded box, cylinder, tube, cone and frustum, sphere, dome, capsule, torus, regular prism, pyramid, star prism and wedge. The tool shows volume, surface area, PLA weight and checks that the mesh is closed. Everything runs in your browser.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Boxes, round shapes, prisms and more.
Specify size in millimetres.
See volume, surface area and PLA weight.
Verified watertight.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This maker tool | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
Are shapes manifold?
Yes.
Where is the origin?
Centred on X and Y with the bottom on Z = 0.
Can I make a hollow shape?
Use the tube or the hollow tool.
Is it free?
Yes.
How do I use the Primitive Shapes STL Generator — Cube?
1. Pick a shape. 2. Enter the dimensions. 3. Check the preview and stats. 4. Download.
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Try the Primitive Shapes STL Generator — Cube now
Create exact test shapes — boxes, cylinders, tubes, spheres, tori, pyramids, wedges and. Free to use.
Try it free