Originally Posted by hyperion99
Question I got an old Eagnas professional Stringer that I got a while ago around 2007.
My major problem is when I'm sliding the clamps up and down the racket the base of the clamps lockup on me. preventing me to move the clamp.
After several tries it loosens up.
I always clean my stringer like 1 a week and put teflon lubricant on the sliders.
Is that what you mean when the base of the clamps wear out?
Is this a problem with most swivel clamps?
Not exactly, the base clamp will not lock completely when you move lever. It's usually a cam adjustment, but there comes a point when an adjustment does not help. As for your problem, it's binding, which can be attributed to the same adjustment, but if you loosen it, it might not lock properly.
There are two adjustments, a Coarse adjustment and a Fine Adjustment. The Coarse adjustment is the nut at the bottom of the machine. There are two nuts, the bottom nut (closes to the end) is a lock nut, and the other is the adjustment nut. The fine adjustment is the one inside the base clamp, that you access with a 3mm allen wrench.
Many of the newer clamps have the Fine adjustment screw on the outside, like the Gamma Switch Action Clamps.