Tantillus a3

The tantillus a2 printer has a limited build volume (10cm*10cm*10cm) , so I plan to build this one - a3 , this one have the build volume of 16cm*16cm*16cm, this will cover most use cases for 3d printing hobbyist.

I use corner connectors instead of top and bottom panels in tantillus a2 , this is because the top panel make maintenance difficult (tighten cable, replace hotend, etc). for all other components , download from tantillus a2 (http://www.thingiverse.com/thing:480860), they can be reu