For the cases i used a staineless wire wheel with my drill, and also used scotch brite rotary attachments for a dremel for the smaller places. The swingarm i just used a regular scotch brite pad, wd-40, and some elbow grease.
the sandblaster i have is a gravity feed unit from harbor freight i believe. it works well. i just used play sand and ran it through a screen to get rid of the small stones, and larger pieces of sand.