Jimi, There are some vises that just rotate, and others that are called 'true rotary' vises. The portion of the vise that holds the jaws is allowed to spin in some sort of bearing mechanism. A handle opposite the jaws from the mounting shaft is turned in order to turn the jaws, unless it's automated.
If the vise rotates in such a way that the hook shaft moves around an axis as it rotates, or on a off angle, then it's not a 'true' rotary. If the hook shaft and vise axis are one in the same, as you rotate the jaws the shaft remains in one place and just spins. The little 'belly' in the jaw mounting rod is what allows the true rotary action by placing the hook shaft and jaw axis in line. Rotary allows you to tie from all angles without removing your hook from the vise. True rotary allows you to tie on the spinning hook, whether manually or automatically, like the Knorvise. There are a kajillion types, you just have to shop once you know your desire and budget. DonO ----- Original Message ----- From: "Desert Eagle" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, February 07, 2003 7:17 AM Subject: [VFB] OK, Rottery question.. > I am going to show my ignorance here. I look at these rotary vices and can't > figure something out. Some have a "V" shaped bar from the stand to the vice > and others are at an angle. What I don't understand is how they rotate ? and > What is the advantage ? On the ones with the "V" dose the whole thing rotate > or just the head. How do you hod everything and rotate the head ? , just > seams complicated and it probably shouldn't be. > > Confused country boy.. > Jimi >
