Bloodbowl dice tower

I took this one:
http://www.thingiverse.com/thing:929060

and played in tinkercad to add the spiralling extracted from this dice tower:
http://www.thingiverse.com/thing:236842

the 4 little holes in cover/tower are meant to be fitted with 3x2 mm NdFeB magnets
the cover may be filled with dices, and then snapped on top of the tower, so the dice will flow and exit!

I still have to print so if you try before me, please share if you encounter any problem and feel free to contribute.

For printing, I recommend a scale of 130% in order to have an height of at least 12cm

UPDATE 21/9/15
After printing one I realized that there may be some improvements to be made, so I made a new version that uses less plastic (first one with supports was 250g of plastic) and with more space for the die to roll, also less inclination to make the die roll better
The picture of the made one is first version (printed in PLA), I'll update picture when I print version 2

UPDATE 12/2/16
Posted a resized version (v3) already scaled to 130%, ready for printing, as requested

UPDATE 13/4/17
Posted a version with 3 steps (v4) to make die roll better as requested in the comments. Use cover v3 also with this version. Happy printing!