Here’s a Vacuum seed cleaner which has helped me to wash extra seeds with much less work and dirt. I obtained the plans for constructing it from Jen Cody who’s a member of the BC Eco-Seed coop to which I additionally belong. The components value abotu $1000 Canadian $. I purchased the Mild Feeder/Drive for $550 and the sunshine feeder controller for $375 from WAJAX Industrial Parts headoffice in Calgary, Alberta.