I have been a member of all three groups way back when they were yahoo groups and I believe the moderators of both U3 groups disapeared. So members decided to migrate to just the Unimat Group. I know that some of us have Sherlines as well as Unimat 3/4, SeigC0, Combi 218, As well as the DB/SL variants. We can all learn something even if it is the other type of lathe. Believe me when say this group is well mannered, informed and respectful unlike some others I'm on. As someone said it ain't broken.