They often appear after joining and Boolean operationsNaked Edge: Surface edges not connected to other surface edges, which create open meshes that cannot be 3D printedįind open polysurfaces by selecting Analyse Direction → Show Edges → Select Open Polysurfaces, and then follow the steps below: To Prevent Naked Edges The most common reason models become unprintable is due to bad objects and naked edges.īad Object: Objects that violate NURBS rules or have structural problems. To achieve a watertight model, you need a closed polysurface. if you dropped the model in a bath, no water would leak inside. Check Your 3D Modelsįor successful 3D prints, the 3D model should be watertight, i.e. Make sure your units are set to mm before exporting your file for printing.

No matter what units you use to create your model, files exported from Rhino are almost always read as mm.

Rhino file tolerance can be set from the document properties window, units tab. Set correct tolerances before you start modelling by finding the tolerance of the program you are exporting your model to and setting Rhino tolerance to be 10 times that (i.e., printer tolerance is 0.1mm, so Rhino tolerance should be set to 0.01mm). There are some unique considerations to keep in mind when preparing 3D print files specifically in Rhino, so for this post, we’re going to go into more detail on how to export your CAD models here. We recently wrote an overview on How to Prepare CAD Files for 3D Printing, going over some general considerations and steps to properly export your 3D printing files.

Setup rhinoceros 6