About this 3D model

Same as my previous version except using the larger drive wheel from McMaster Carr Part Number 6867K557. Also added the Quick Release design and ancestry for convenience. http://www.thingiverse.com/thing:7113 I think BOTH originals are Brilliant Designs and I applaud the CREATORS ! ************ UPDATE *************** http://youtu.be/f8gM3OFptxI My setup here was modified slightly to gain 100% reliable performance. My longest print was 36hours without failure. Now to work on speed ;=}