Strong spool holder

I made a strong spool holder for heavy spool :

- Use a threaded rod 8mm and 2 profile 30x30

- The plate on the side serves (right or left) to lock the movement of the rod

- You can easily change the spool from the top with this system

Tips : you can use 3 profiles (30x30) and a big threaded rod 8mm to be able to put full of spool

Edit 17/05/2017 : I'v add 2 UFO cone and 2 608ZZ bearing inside the spool
See http://www.thingiverse.com/thing:1227324 to find the UFO cone