After building it, I realized only the bottom 2 X 6 was necessary. I could have just split the bottom one and been done with it.
One thing I wanted to be able to do is to use the chisel on the front part of the turning (not having it in the tailstock). It is a good idea to number one corner and put a corresponding number on the turning. That way you can put it back in the same corner if you take it out and discover it needs some touch up work. Also notice that the hose clamp has been shortened and turned the other direction.
It also saved the day when my headstock chewed up a turning I was working on. I just clamped the partially completed turning in my homemade chuck and continued on with the turning.
If you need a chuck of a specific size, and have a faceplate, this might work for you.
St. Peter, MN