Step 12: Creating a Ponoko-ready .eps file
Currently, Ponoko only accepts .eps files.
This means changing your P1.svg to a P1.eps. In Inkscape, this is an easy task.
Choose "Save As..." from the "File" menu. A dialog box appears (see image below). Change the name to "Jewelery". Now choose "Encapsulated Postscript (*.eps)." from the drop-down list.
Now click "Save". When the "Output" panel appears make sure the "Convert texts to paths" tickbox is ticked, then click "OK".