Released Meshmixer 2.7, a free tool for mixing different parts of 3D models and transmit directly to a 3D printer.
 
In this new release we find (data log):
  • New Layout/Packing Tool for 3D print bed layout
  • New Deviation Tool analyzing differences between meshes
  • New Clearance Tool for verifying tolerances
  • Additional modes in Reduce Tool (triangle count, max deviation)
  • Improvements to Support Structure Generation (better DLP/SLA preset, horizontal bars, …)
  • Boolean options when dropping Solid Parts
  • Snapping options in Measure Tool
  • Print Bed now visible in Modeling View
  • Improved support for lower-end graphics hardware
 
For more info and download: http://www.123dapp.com/meshmixer