I have a SL-20 with a 8" 3-jaw Samchully chuck. I purchased a set of serrated hard jaws. They are pie jaws so they dont come to a point in the center. The jaws are about 2" deep.
When i am attempting to turn a smaller (.375"-1.00") piece of material with less chuck pressure, the jaws are not biting into the material as much toward the positive side of the chuck as they are toward the negative side. Sometimes they dont even touch on the end of the jaws.
This is resulting in chatter issues when turning. I have used a tailstock with a live center. That helps but still does not make it perfect. As we all know, many times a center can not be run.
I know the jaws "float", but is there some kind of adjustment that i need to do in the chuck?
My other thought was to see if there were such things as a serrated hard jaw that is only 1" deep. This still isnt fixing the mis-alignment problem but would solve the chatter issue. If anyone knows where i could get a good set of those would maybe help to.
Any ideas or am i just S-O-L??