Hi Chad
This what I would do/recommend

For making speaker rings ....
When you get your Jasper rework the jig just a bit (see below) bolt it up to your router ,set the pin in place, pop in a plunge round over bit then make your 1st pass with the round over bit (see link below for the bit ) once you have that done pop in your 1/4" bit and cut your cir.out and your done.
You can filp the Jasper over and do both sides of the round over if you want then use your 1/4" bit and cut the cir. free.
Doing it this way you make it easy on the bits and can just make one pass to cut the cir.out.
Flat Bottom Round Over
http://www.mlcswoodworking.com/shopsite_sc/store/html/smarthtml/pages/bt_groov.html
NOTE**** Most of the Cons. reviews on the Jasper Jig are about the holes breaking out of the jig, if you take a hard look at one of the snapshots below you can see why, they are drilled to deep in the jig or to say the jig is to thin but you can over come this error by using the brass guides in the jig.
Many Routers use a flat head screw to mount the base plate to the router and that's the same screw you need to use to mount the Jasper BUT if you torq it down ,the hole in the Jasper Jig will snap, and you just trashed a 30.oo jig, also if you use pan head screws the same will come about because you have no support under the screw so to speak (counter sink hole under the mounting screw) The Jasper Jig is a GREAT Jig but you must out think the Mfg.when it comes time to use it over and over.

They do make a small ring that you can use under the flat head screw that will let put the load down flat and put the load out just a bit,it looks like a flat washer (same size as a flat head screw) but with a counter sink in center of the flat washer,harden steel.
The Jasper comes with most of the screws to fit the routers they list on the pack BUT they are small Pan Head Type,if you use the screws that come with it besure to use a flat thin washer under the head (it must be the right one, for the over size drilled hole)

Sorry to push this point so hard but the hole in the jig will snap out, it's only 1/16" thick or less.
Hope this helps you and other user of the Jasper Jig.
Bj
