It ain't like adderall or dexedrine create a lot of powder to snort.
Try snorting 60-90mg of Adderall. I crushed up three 30mg pills a few days ago. I came up with 6 1-foot long lines of powder. It IS a lot of powder.
I would seriously be interested in an Adderall extract method that works as well as the Ritalin one done by PhreeX. Some people get lots of Adderall's (60 30mg pills a month for instance). Of course some will be lost, but a simple, decent yield extraction would be nice.
It doesn't even have to be complete. Getting rid of one or two inert ingredients could greatly reduce the volume of powder you have. A 1-foot line would be better than 6 of them.