To get a piece to fit an irregular wall, you can scribe the contour of the wall onto the work piece, make the cut with your jigsaw, touch it up with a belt sander, and check it against the wall — then repeat the process until you get it perfect or you give up and call it “good enough.” Rather than go through all that trouble, the QuickScribe lets you cut the piece with a router in one step.
The wheel on the QuickScribe attachment precisely follows the contours of the wall while the router makes the actual cut. If the piece is too thick to cut in one pass, you can make a shallow pass with the QuickScribe and follow it with a jigsaw.
The QuickScribe 300 works with the Bosch 1609 and Porter Cable 321 and 7312 offset routers. The QuickScribe CD works with the Bosch Colt router with an offset base and DeWalt laminate trimmers using the DW6707 offset base. Either QuickScribe will run you $80.
QuickScribe [Corporate Site]