Having a Boolean Difference problem

 From:  BurrMan
4302.2 In reply to 4302.1 
Hi David,
Your wheel revolve is kindof twisted... Luckily that the history is still enabled on it, so you can fix it by doing this.

Go to your front view and view this curve and turn on points.

Select those 2 points that I have circled and run transform/align/horizontal and pick your line there to align them with it. The revolve will update and the boolean operation will succeed now.

EDITED: 19 Jun 2012 by BURRMAN