This is a Mini-Mendel ( http://www.thingiverse.com/thing:1745 ) where many parts have been shelled (hollowed out) to 1mm (some 1.5 or 2mm for better printability). This shall allow to use even less material in printing and apply the material where it counts for the mechanical structure (2-3 shell layers but very sparse infill). Where appropriate I added supported and teardrops to make the shelled parts printable. The idea is to supply the enormous demand for Mendel-parts by producing batches of hollowed Mini-Mendels very fast and with very little materisl. Then to give these to the people to be filled with Epoxy, so they can print full Mendel-parts and sell the MiniMendel to the next person or to just stay with the MiniMendel as it is.Total(Sadly the license must be GPL 2 as the Mini Mendel is GPL2 instead of a license appropriate to hardware-designs.)changes of version 1.2:changes of version 1.2.2:changes of version 1.3:TODO:The original files can be opened and exported in Alibre Design (trial version. Too many parts in assembly for the free version.). For other solid modelers exports as Step, SolidWorks and Acis are provided.Forum-Thread in the RepRap-Forum: http://forums.reprap.org/read.php?151,43636 Forum-Thread in the BfB-Forum: http://www.bitsfrombytes.com/fora/user/index.php?topic=697.0