Friday, 9 April 2010




The last joint in the photo (2-ball, double screw) is as easy to make as the first one, but the alignment of the drill holes is just as crucial. Another drawback of this joint is in the screw tension. Finding that perfect screw torque (so that each ball moves with the same presure) is not so easy. This can become bad news during a shoot if the tension needs adjustment. For this reason, they tend to not be used very often.

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