Hi Tom,

There will be commercial offset base plates available for your router, but why not make your own out of 1/4" ply and use a bearing guided rabbet cutter?

Make an offset router base: Shop made router jig for edge moulding - YouTube

 

I cut a groove in the end of a cutting board. See if that might give you some ideas on how to stabilize your router.

I can't find the pics! :-(
I clamped a 2x4 to each side of the cutting board. Then I made a jig from 2 pieces of 1/2 inch plywood so the router template bushing would be guided along the path. Then I screwed on a stop on either end. The router had a flat surface to ride on and I wound up with a nice hand grip on both ends of the cutting board.

Sorry I couldn't find the pics.
Mike

 

I have never use and offset base before. The edge will be 3/8" wide, would an offset base help in this case?

 

This sounds like it might work. I'll see if I can do this.

 

This might work if I can get a 2x4 inside the cabinet. I guess I could nail it in place the put the jig on top of the 2x4's.

 

Double face tape a 2x4 to the opposite side of rabbet and use a rabbing bit that should give you 2" to support the router.

 

Put your tape on and clamp it for a few minutes. That 2x4 will be stuck like chuck!

 

Well, first thing is to make sure the rabbit is dead, before you start cutting on it. That always helps.

See, your teacher was right, spelling 'does' make a difference. :haha:

 

Your right it does make a difference. I will make sure that rabbit is dead before I cut a rabbet. Never was too good at spelling I & E get me every time.

 

Got 'er done

Well after some great input I combined ideas to come up with a solutions. I taped a squared 2X4 to the outside of the cabinet, flush with the top edge of the cabinet. Next I taped a piece of stock to the 2X4 so that the edge toward the inside of the cabinet was flush with the location of the rabbet. Then used a pattern bit to cut the rabbet.

Thanks everyone for your help.