MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
You should measure the width of your head at the temple and add maybe 20 mm. You should also allow space for any padding you might want to put in it. Notice I just added a pic with the padding I used and added it to the summary. Keep in mind that if you scale it too much, the parts may not fit together properly.