Variable Vacuum shield

**FAQ**: http://www.thingiverse.com/shivinteger/about

[>>>] Generating Attributions log:

[0] Thing Title : Open Hardware Logo - OpenSCAD Generator
[0] Thing URL : http://www.thingiverse.com/thing:7635
[0] Thing Author : clothbot
[0] Thing Licence : Creative Commons - Attribution - Share Alike

[1] Thing Title : Direct Drive for Ultimaker with Default Rods
[1] Thing URL : http://www.thingiverse.com/thing:189742
[1] Thing Author : ThomasKTN
[1] Thing Licence : Creative Commons - A