While I was on here I just wanted to leave a quick note about something I tried last night. The 3-jaw synchronized Taig chuck is simple to use but trying to file down the nib left behind after truing the jaws is a real pain. I pulled the jaws off last night and filed off about 1/16" from the back side of the 'pointy' part, down to the alignment slot on each jaw. Now the washer used to load the jaws can set back behind the jaw surface on the actual steel jaw and you don't have the stupid nib to worry about. My testing showed the chuck to be just as (in)accurate with either method.

I suspect that if one used a more precisely round washer to load the jaws you could get the chuck to center better.

Anyhow, I'll take some pictures and post them in a day or so.

Here is a picture of the modification to the Taig soft jaws that allow one to put the 'truing washer' behind the jaws. This eliminates the need to file down the little nib left under the washer. I just filed the a bit from the inside-top of each jaw to clearance the washer. This allows the washer to set on the actual steel part of the jaw.

You can ignore the funky step point on the jaws. That is a mistake from 're-pointing' them on the mill with a beveled cutter.