christmas tree

Print 1, 5, 9, 13
2, 6, 10, 14
3, 7, 11, 15
and
4, 8, 12 at once with different colors.
e. g.: green, red, brown, white.
Also print 15 roles at the same time (e. g. blue).
Use a one millimetre cotton to assemble the tree.

Have a look at my other xmas decorations:
http://www.thingiverse.com/thing:1851504
http://www.thingiverse.com/thing:1857029