I've set up a document that's 6" x 3" and I'm trying to print 2-up. Unfortunately, when I choose to print it as thumbnails, it actually scales the document up to about 7" x 3.5". Any ideas why this might be happening? I can't find a way to adjust the dimensions of the thumbnails. Alternatively, if anyone knows how to print 2-up without using thumbnails, that would be a great solution, too.
Place your 6 x 3 document 2-up in a new larger doc. If it's more than one page, use the script you'll find at InDesignSecrets » Blog Archive » Zanelli Releases MultiPageImporter for Importing both PDF and INDD Files to place all the pages.