I am going to take a class on hollowing in a week with a turner who has his own turning and cabniet shop. He has 4 lathes setup for instructional courses in the back of his shop (2 are One-Way and Powermatic and Jet).
He uses Derry Lightening Hollowing system in his classes and has a Jamison setup for comparison he said. He favors the Derry system due to ease and stability in the lazaer system. He uses Thompson gouges to teach with and teaches free hand sharpening as part of the class. I have been researching Derry and it has very good reviews but i am concerned about the limitations from what im reading - limits in depth and diameter - as i remember 10" diameter is the max.
I have a Jet 16" swing and i want a Rig that will accomodate it if i choose to turn something that large.
wondering what other people think that are using this system or your thoughts on any other hollowing system......I know Monster, Kobra, Spindoctor all make good systems but i have read that some have issues with the lazer stability during hollowing and its accuracy......some have larger and longer bars to accomodate deeper turning etc......
I know the topic has been beat into the ground but i have not heard of the Derry system and thought i would ask about it............it can be seen at