3DPRINTINGWORLD's Collapsing Lightsaber (Removable Blade) was too big to print with my FlashForge Finders 140mm build area. Cut the blade sections down to 140mm and added two more so it still extends to about a meter (haven't actually measured it). Cut the large section of the hilt and added the other screw section to it so it screws together/apart in three sections with each part being under 140mm.
Assume it would probably work on other printers with small build area's but only tested it on my FlashForge.
Vader's Saber Here: https://www.thingiverse.com/thing:3752927
If your build area is big enough I would take a look at 3DPRINTINGWORLD's original https://www.thingiverse.com/thing:3606120
For "Lightsaber Blade 1.stl"; use vase mode. For all other Lightsaber blade parts use vase mode but also set bottom layers to 0.