Greetings. I am sorry, but I could not find that theme and I am very curious how to make completely new saber. I would appreciate your help.
Look in the Master Sticky at the top of the forum - it will answer all your questions.
You need to download Gmax, and there is a tutorial in the sticky known as Virtue's Saber Crafting Tutorial, which will teach you how to make lightsaber hilts.
Download Gmax from this link, because the one in the sticky is broken.
I don't know how, and I don't know why, but this is totally Sheep's fault.