Hey... not an industrial designer or anything (though I need to learn this software for my current job), but I wanted to say that your tutorial was very well-done. Everything has worked out near-perfectly on my end following your clear, step-by-step directions. I could not, however, seem to get the "revolution" joint. I got a "cylindrical" joint instead, and could not seem to rectify that. So, the dynamic sim did not work. But, the model turned out great. One minor complaint: Certain things could have been explained, like why 3.5 mm pitch? What is that for? Or, there were other operations or values you chose, and I did understand why. Anyway, good work.