Arbortext IsoDraw > User's Reference > 3D Mode > 3D Tools > 3D Select Axis Tools > To Create Free Axes through the Origin
  
To Create Free Axes through the Origin
Use the 3D Select axis (through the origin) tool to create a free axis, or multiple free axes. Each free axis you create intersects the origin and is oriented tangent to a 3D element contour at a single point. The arrowhead on the free axis indicates the positive direction.
1. Click the 3D Select axis (through the origin) button on the 3D Tools toolbar.
2. When the cursor becomes a , click a contour on an element in the drawing. A red free axis through the origin appears. The axis is oriented tangent to the contour at the point where you clicked.
3. To create another free axis, click another point on an element contour. A new free axis through the origin appears. The new (red) free axis is selected; the other (blue) free axes are not.
The figure below shows free axes through the origin. Each axis is oriented tangent to a contour on the part. The selected free axis is red; the other free axes are blue.
Free axes created with the 3D Select axis (through the origin) tool