Steve Rasmussen

That's a pretty cool tip Rich. So far I have ended up using a router to get a hole of uniform depth and irregular edges. Then I hand fit a piece of wood of the correct thickness. I have to rely on grain matching to achieve "invisibility".
This seems much easier to get the colors & grain matched.

They're both good to have in your bag of tricks.  Lots of other ways to do a repair as well.  

Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner