Step 2: Copy the image--easiest way to do that is to right-click on the stage, and select "pic"--that will open up the stage image alone in a browser tab. Then, you right-click on that to save to your hard drive. You can hide the carver's hand using your script, or use an image editor like "paint" to crop out just the stamp.
Step 3: Convert the image to a format recognized by your 3D printer. We use http://www.thingiverse.com/thing:15276 to convert the 2D png to a 3D extrusion of the 2D shape in STL format.
Step 4: Print out your stamp, putting the STL file to a 3D printer. You can then put a handle on your stamp, ink it and apply it to shirts, hats or other cloth, as shown below.