In todays update Steve talks about Flex sander. They are really great to have even if you don't do intarsia.
I bought my original set up from JGR in TN but you can now get from Workshop Supply in Canada. Price is the same but you don;t have to worry about customs etc.
http://store.workshopsupply.com/catalogue/intarsia-tools-c-206_834_807_810.htmlThey have an arrangement with Judy as you can also get a lot of her patterns there too.
I did a heart a couple of seeks ago simialr to Steve's and used my Flex Sander to shape.