Hi, the LED-chaining for light saber is a challenging and time consuming job,
so I designed something to do that easily,
can just cut the leg of LED, stuck into the board and solder!
using Inkscape for board designing as all my other projects
currently trying to make the board suitable to sectioning, so my light saber can lit up, not as a whole but separated at on/off ,
attachment: the product file 
LED_STRING2.fzz (58.6 KB)
You can follow my fanpage if you like the work : fb.me/PandaSpectrum
or IG but very-less updated.
Feel free to comment or PM me at FB fanpage if you had other things wish to know
regards