3D routing: Need a larger Ball bit

[greg@germanguitars.com]

Howdy. I got my ShopBot 3 weeks ago and I am building archtop guitars with it using Millwizard for my toolpaths. I'm using a 1" straight bit for my roughing pass, and a 1" ball bit for the finishing. Where can I get a larger (2" or so) bit to smooth the final shape with fewer passes?
Would a bit that large hurt my 3 1/4 PC router at 10K?
-gg

[sheldon@dingwallguitars.com]

I'm using a Freud, Dimar also makes one. If your collet is nice and true, there shouldn't be a lot of vibration.