CAD - Drawing a slotted rotor

There is no audio on this video. Here is a description of the drawing steps:

  • Draw the outer circle
  • Draw one rectangular notch
  • Use Transform - Polar Array Copy to make 11 copies of the rectangle, rotating each copy 30 degrees about the Z axis (ie 0,0,30)
  • Select all, then convert all to polylines (CTRL+A, then CTRL+P)
  • Select all again, then use Edit - Break at Intersections
  • Select the parts of the shape to keep, then use Edit - Join
  • Select the unwanted parts, then delete them (is easiest to select all, then CTRL+click on the shape to keep, to deselect it)

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