About this 3D model
If there were a setting to declare this a failure in progress, I would so designate this contribution to Thingiverse. I tried this gondola of my own design ( http://makerblock.com/2012/02/drawbot-the-assembly-part-viii/ ) but it just wasn't working. I've been using John Abella's design. :) For the latest on my Drawing Robot Adventures: http://makerblock.com/2012/02/drawbot-printing/