Design to STL
Design a Part for 3D Printing and Export STL
Create a simple metric part in your browser, export it as STL, and check dimensions and layers in a slicer before 3D printing.
Open the 3D editor- Model a solid using drawing and Push/Pull.
- Export the selected component as a binary STL.
- Finish print preparation in your slicer.
Start with the dimensions of the part
Measure the space the part must fit and decide its width, depth and thickness in millimetres. Start with a simple plate or spacer. Draw a closed face in 3D and use Push/Pull to give it thickness, or import a saved 2D profile and extrude it.
Build volume, then add details
A flat face alone is not a finished printable solid. Add thickness, then create holes or raised regions. Inspect the part from several camera angles so hidden gaps or unintended extra components are easier to spot. Use the mounting-plate tutorial for a complete first example.
Export only the intended component
Select the finished component and choose Export as STL from its context menu. The export produces a binary triangle mesh for the selected component, including its grouped geometry. Exporting a mesh is different from saving an editable design; keep your editable project or account copy as well.
Check units and scale in a slicer
STL stores geometry without a unit declaration. Super Simple 3D models in millimetres, so interpret the STL as millimetres and compare its bounding dimensions with your design. If a 60 mm plate appears at another size, fix the import scale before generating printer instructions.
Review the layers before printing
Choose the printer, material and orientation in your slicer, then inspect the layer preview. Check thin walls, openings, overhangs and the first layer. Allowances for moving parts or bolt fits depend on your printer and material; a small fit test can help before making a larger part.
Importing an existing STL
The editor can also import STL files as mesh components for positioning and reuse. An imported triangle mesh does not recover the original sketches or editable feature history. Use native drawing tools when you need to change the dimensions or hole settings of a newly designed part.