I am with cabinet man, I do a lot of pattern following, Call up the local machine shop suppliers, get a carbide fluted end mill, it is the same thing without a bearing, and they cost about 1/3 as much and are generally exceptional quality. Just use a bushing guide on your router. Also have one for ply, one for hardwood, and one for MDF, when the hardwood one starts to dull use it for ply, when that one is dull use it for mdf, when that one is dull sharpen and restart. MDF will dull a new bit fast, but a dull bit will still cut MDF well.
For cost comparison, a 3" end mill, 3 flutes, vented, up cut costs me about $43, same bit from CMT is about $135, and the end mill lasts longer, and is cheaper to sharpen.
Last edited by scribbles; 04-30-2009 at 09:02 PM.