Ever wonder how fancy pen case are done with beautiful waves etc, here's two video's
1st is using a traditional OT lathe
[ame=http://www.youtube.com/watch?v=MMI1DF-mXJw]Holtzapffel Ornamental pen barrel turning - YouTube[/ame]
2nd a Giulloche machine this one is quite long but worth it.
[ame=http://www.youtube.com/watch?v=MyqeeZpSdEo]Pen Barrel Guilloché - long movie - YouTube[/ame]