Pretty fun little project for the day on a lathe barely big enough to do the job.
My rotary table has been barely used in the last 25 years. I wanted to mount a lathe chuck to it for a while to make it easier to use for little projects. I bought a Shars 6" three jaw and a scrap of aluminum close to the 200mm diameter of my rotary table. 7 7/8" worked perfectly. It was thicker than I needed but it won't hurt anything.
I also used my faceplate for the first time so I had to face it off, I bored the bore a bit to true it up, and I turned the diameter.
Then I could make the adapter plate dead on. I made sure not to remove it through the whole project.
The saw cut plate had to be shimmed to sit flat enough to be tightened without warping. I literally used a wood shim. If it works it ain't dumb. Lol!
I dialed in the rotary table with a gauge pin in the chuck. I was able to get it well within 0.0005" on two different diameter pins.
I can use a similar method to center the rotary table under the spindle.
It was a relaxing project in my home shop. It came out very well and I can't wait to try it out.
Does anyone know if I can buy a set of dividing plates for this rotary table?