The patterning from printing make the seam between the two halves near invisible when printed in clear PLA.
This particular version is done at 150% size of the larger of the three available at http://www.thingiverse.com/thing:413 because the 'normal' large size won't hold all my Catan pieces for 1 color. 125% may be a better size, as there is a lot of room left over in this big one.
I did this at .2mm layer height with a cooling fan. Took maybe 6 hours for both halves?
Sweet! This twisted box could be more fun than a barrel of monkeys! Each Catan part set will have a matching color box.