Originally Posted by william7gr
One of my first racquets I practiced with was an O3 and I strung it without any problems. No one I know uses an O3 so I have never looked up how to do it. What is the 15 degree thing your talking about. The machine is a tank it is quite heavy so I felt no need to bold it down to the table and have never had any problems with it. Sorry I will have to get back to you tomorrow about the hight of the cart. It works fine for me but I'm only 5 1/2 so taller people might have some problems.
Yulitle's video describes this really well, it's starts at 1:20:
While stringing crosses, due to the size of the O ports, the tension gets swayed away from the gromments. So we need to the brakes and set it so it's 15 degrees towards your body. That way the lock will keep the racquet stable while the tension is being tighten. Difficult to explain, better to see Yulitle's video.