No, whatever lathe tools you use for woodturning will serve you well for segmented work. There are various methods of cutting the segments. No one way works for everyone. There are ways to do it with cut off saws as well as methods using table saws. Special safety considerations are needed using each specific cutting technique. If you join the Segmented Woodturners group you will have access to the forum which contains discussions of these varied techniques. Meanwhile, you can check with your local woodturning group to identify members who do segmented work. These people are normally an excellent source of information and can help you perfect your technique. Retailers such as Woodcraft and Rocker normally carry a number of books you can reference.