I saw a site where they showed parts going into a chamber, this was flooded with gas and ignited, the "explosion" melted all the burrs off the ali parts as they are much thinner than the bulk of the metal.
Perhaps not one for home use.
This site is about home anodizing and you need a good finish for that, he uses tumblers and some are homebuilt. I think he mentions a supplier of media that is suitable. BTW the anodizing booklet he sells is quite good (no affiliation).
http://www.focuser.com/atm/anodize/anodize99.html
Graham