STEP Files
JetStream Roamer uses the Open CASCADE libraries to read and tessellate .stp and .step files up to and including AP214 CC2 and AP203.
Supported Entities
Assemblies.
Colors.
Planes.
B-spline and rational B-spline, Bezier, conical, cylindrical, offset, rectangular trimmed, linear extrusion, bounded, manifold, spherical, toroidal, uniform and quasi-uniform, surfaces.
Shells.
Advanced and facetted boundary representations (BReps)
Unsupported Entities
Points.
PCurves, B-spline, rational B-spline, Bezier, trimmed, uniform or quasi-uniform curves.
Circles or ellipses.
Hyperbola.
STEP File Reader Options
Go to Tools, Global Options, STEP
The STEP dialog is displayed

Enter the Faceting Factor (the value must be greater than 0). The higher the value, the more JetStream will facet rounded entities and therefore the smoother they will appear. See for more information.
Enter the Max Facet Deviation . This will facet entities to within the specified tolerance. See for more information.
Click OK to set these options or Cancel to exit the dialog without setting them.
