Luke Maddux
15th April 2015, 12:43 AM
I've just gotten a new lathe. A big powerful one with EVS. I'm turning a 12.5" bowl right now and when I get it to a certain RPM it vibrates a little. Not enough to move the lathe, but enough to notice it. See my previous post for more details. There is some important information in the post.
I realized today that if I turn the RPMs up, oddly enough, it goes away!
I'm obviously not dealing with some kind of linear relationship between RPM and lathe balance. If that were the case, faster would equal a more violent vibration. Something strange is happening. I believe that something is referred to as a Harmonic. Basically, with a blank THAT diameter spinning at THAT rate and weighing THAT much, the lathe just wants to vibrate for some reason.
Has anyone experienced that before? Actually being able to eliminate vibration by increasing RPM?
Very interested in responses.
Cheers,
Luke
I realized today that if I turn the RPMs up, oddly enough, it goes away!
I'm obviously not dealing with some kind of linear relationship between RPM and lathe balance. If that were the case, faster would equal a more violent vibration. Something strange is happening. I believe that something is referred to as a Harmonic. Basically, with a blank THAT diameter spinning at THAT rate and weighing THAT much, the lathe just wants to vibrate for some reason.
Has anyone experienced that before? Actually being able to eliminate vibration by increasing RPM?
Very interested in responses.
Cheers,
Luke