Double helix challenge

Inspired by Zomboe's Thing8, I created this double-helix ladder which is meant to be printed without support :) How far up the ladder can your printer climb?I managed to print 9 clean rungs before it all started to go to pieces :) If you play around with Skeinforge cool I reckon more would be possible. --- Imported from Thingiverse: https://www.thingiverse.com/thing:4659 Original creator: chylld