Not possibly to build them at workbench normally but I think there is a mod that allows that, could someone check that out for me I think I saw one somewhere on kotor files?
To get more lightsabers, they are rewarded to you for certain quests after you make a lightsaber, one of these is talking to mandalore after helping around the camp enough to get him to take you to iziz(others I can't think of off the top of my head.). Hope this helps you.
Scripting + Harark1 =
Death causes Life and Life causes Death.
And you say Murder isn't natural
This is the url for Ninth heart: http://www.jediquest.webs.com/