CNC Router Head/Motor???

I'm building my CNC router and am almost complete. The design is
approximately 32"(x)28"(y)8"(z). I would like to be able to chuck a 1/4"
end mill and be able to cut at depths of about 6~12 inches. I don't think a
router will do because of the depths I want to cut. If cutting almost
vertical cut the router would hit after a few inches. Preferably I would
like to be able to have a 6" cutter but don't know what I could use. Any
suggestions on a motor/head for my router?



Thanks,


Barclay