Curve definition for flowline toolpaths

In many cases, when you select an embedded pattern for flowline finishing toolpaths, PowerMill automatically creates the correct curve definition.

However, there are times when either:

• The curve definition is not what you want.
  • Automatic curve definition is not possible.
  • You may want to re-order the limit and drive curves, or add in extra drive curves.
  • The curves may contain more surfaces than you expect.
• The curves in the embedded pattern are not valid. This may be because:
  • The pattern is not embedded.
  • The embedded pattern does not contain the correct number of curves.
  • The curves in the embedded pattern are self-intersecting.
  • The curves in the embedded pattern do not meet within the Closure tolerance.

In many instances, you require four curves to create a flowline toolpath, but not always. There is no correct number of curves required to create a flowline toolpath. There must be at least two.