Mini Project : Worm Gear (I)

Following is the final result that we want to design in this tutorial.

Step 1 > Draw a Spiral that the Worm Gear crest runs along

Step 2 >  Draw a Profile of Worm Gear Crest

Step 3 >  Sweep the profile along the helix  

Step 4 >  Draw the shaft of the Worm Gear