How 3D printing from Rhino works
How to prepare a Rhino model for 3D printing
Having too thin parts on a model can result in fragile parts or non compatibility with some printers.
The chart below will give you an estimation of the minimum wall thickness to meet with printing requirements.
|Type of printer||Minimum wall thickness|
Rhino uses NURBS surfaces to describe a model’s geometry.
In order to be exported as a valid
.stl, your Rhino object must be a closed solid. You can use the ShowEdges command in Rhino to display naked edges and find unjoined edges on your mesh.
Creating a mesh from your NURBS surfaces:
- Select the surfaces you want to mesh
- Enter into the command line
- Click on Detailed Controls in the Polygon Mesh Options
In the Detailed Option window enter the following settings:
- Maximum angle: 20
- Maximum edge length: 6
- Minimum edge length: 0.0001
- Maximum distance, edge to surface: 0.001 (< 1/2 printer resolution)
Shells and nested parts
If you have a complex model with multiple shells and nested parts, follow these recommendations:
- Export each shell as an STL file (one STL for every part)
- Select each shell in its relative position so that when you import your STLs in your 3D printing slicer each item will drop into place with its given coordinates