The file 'Basic Jack O’Lantern Autodesk 123D 3D Printer Model' is (123d,stl) file type, size is 2.8MB.
Autodesk provide three pumpkin shapes for use with their free 123D software.
I decided to make "carve" a simple Jack O'Lantern to be printed.
http://www.123dapp.com/
http://www.123dapp.com/halloween
http://www.123dapp.com/FullPreview/Index.cfm/ID/594580