TIG welding Cast Aluminum motorcycle case?

[Rodsmachineshop]

i use steel shot in my cabinets thats what most machine shops use and after blasting with shot it go to the hot jet washing cabinets for a hour or more for cleaning , even cleaning with those small brown disk pads when doing head gasket cleaning or removing gasket material is like throwing sand in the engine , i have a friend that blast cleans aluminum but he uses walnut shells for blasting media works good since leaves no crap in the aluminum and washes rite off after blasting