i adapted the original rocket to be hollow, accept an ornament light, and print upright in one piece. i was hoping that this was going to be a quick job, but ended up modifying the original quite a bit to get good control over the shell thickness. I think it was worth the time.2015-12-17 - Updated model to include fin supports. This should help ensure printing successprint with 2 shells and no infill with supports. Raft or brim is recommended to promote build surface adhesion.use some sort of clear filament to get the best effect. i found that the clear ABS available on Amazon.com works pretty well.