Lloyd, you asked for feedback after using your Stomper, Longworth Chuck and Seg Easy plates. I love and use all of them. I personalized my stomper a little bit.
I built my stomper per your video with one spring from the sprinkler and then read about your HD Stomper. I wanted both, but only had a place for one. I used the HD Stomper to make my first segmented vessel and it worked great. When I started assembling my open segment bowl, I found the springs to be too strong. So I cut the 1 1/4" PVC 2" shorter and glued on a threaded coupler and then screwed on a threaded cap. Now I can unscrew the cap and add or remove a spring and have the correct resistance for each project. I do like to have alternatives! This only added a few cents to the cost of making the Stomper and I don't need to use any tools to make the change.
The other thing I did was to move the white ring from the sprinkler post and attach it to the bottom of the post where it was trapped between the bottom of the post and the top of the spring. Originally, I had the white spacer on the post, but when the spring pushed the post up, the spacer went to the top of the PVC and stayed there as there was nothing to force it back to the bottom and keep it centered. Doing this trapped the centering ring between the bottom of the post and the top of the spring and it travels up and down with the post. I also drilled a 13/16" hole in my table and that took all of the play (movement, looseness) out of the post. I realize that the 13/16" bit size is not included in Forstner bit sets, but I had one from a prior project.
Because I used a 1/4" thick floating base in my segmented project, I did not want to drill an 1/8" hole in it to center the Stomper. So I turned a waste block down to a diameter that was smaller than my first ring that captured my floating base. Using the lathe drill chuck in the tail stock I drilled the 5/8" hole 1/8" deep in it and then drilled a 1/8" hole all of the way through the block. I removed the block from the faceplate and used 3 small pieces of double sided tape to adhere it to the floating base. I mounted my floating base and used a center with a point in the tail stock to center the waste block and press the double sided tape onto the floating base. I used this to mount each of my other rings with the Stomper and when they were assembled, I screwed a drywall screw into the 1/8" hole a couple of turns and grabbed it with a pair of pliers and pulled it off of the floating base with no damage. I can re use and re turn the scrap block as needed or make a new one. Just another way to accomplish the task.
I used both the Seg Easy plates and the Longworth Chuck to assemble the Tornado Bowl you posted and they both worked flawlessly.
Thanks for all that you do to help so many of us enjoy making segmented turnings.
Chuck