Would I be able to machine 1/4" thick aluminum plate on my 2 HP Shop Fox shaper ? I have a template and basically I was wondering if I could do something along the lines of using a pattern bit with a bushing to follow the template. The spindle speeds of the shaper are 7,000 and 10,000 rpm. If this is possible, would I be okay using a carbide tipped 2 flute flush trim router bit like these http://www.mlcswoodworking.com/shopsite_sc/store/html/smarthtml/pages/bt_flush.html or would it be better to use a solid carbide spiral bit like these http://www.mlcswoodworking.com/shopsite_sc/store/html/smarthtml/pages/bt_solid.html or is there something else that I should consider using?