Draw the Arm as shown above with Cutting Plane line and Section (hatch) lines.

Dimension and add notation to this drawing.  Include the Tooth Detail view

For Closeup view click: arm.pdf

Center drawing, scale, plot and hand in to be marked.

Hint on drawing the teeth using Polar Array:

Draw Circles Array Line for Teeth Draw Line ½ of Tooth
Draw Line at ½ Angle of Tooth Move Line to Tooth Side Mirror Line for Other Side of Tooth
Trim Tooth Lines Array Tooth Trim