Class 31 - Creating Stencils using 3D Printer

To create stencil to copy

http://chaaawa.com/stencil_factory/

To create stencil in Thingiverse to print
http://www.thingiverse.com/apps/customizer/run?thing_id=55821&code=55ae818a0fda17ecccd29bfac35a5df1

To create stencil in Thingiverse for iphone case
http://www.thingiverse.com/thing:58001