Wanhao Duplicator 6 Ball Bearing Spool Holder (short)

I could not get 5" threaded rod, so had to buy 8x100mm bolt, so I made shorter version of original spool holder - 80mm long.

You should take the nut from _ZincBoy_ original thing. All the instructions also apply, but you can use 100mm bolt.

Also, the diameters are a bit bigger than needed, so I used insulating tape for tighter fit.
One more thing - wanhao spools do not fit by default, so I had to cut a bit of the fillet, to reduce diameter (about 0.8mm - two perimeters of 3).

UPDATE (2