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Simply changing the design of the top assembly on the Classic Bookcase will dramatically change the whole appearance of the project

Fluting Jig hen I first saw the shop drawings for the Classic Bookcase, I was pleased. Nice design, basic joinery, and useful, too. Then I saw the flutes (vertical grooves running up and down the caps). These would be interesting.

My first question was how to make them. Right away 1 knew it would be with a core box bit in the router. But what's the best way to rout the flutes an equal distance apart? What was needed was some sort of indexing jig.

The jig in the photo is the result. It has just two main parts. A piece of hard-board that replaces the base plate on the router (Fig. 1). And a set.of spacer strips attached to the hardboard.

spacer strips. The spacer strips are the key to the jig. The width of each spacer is critical — it should equal the desired distance between the centers of the flutes, in this case (Fig. lb).

'Hie two outside strips act as fences for guiding the jig on the workpiece (Fig. la).

base plate. The base plate should be cut long enough to accommodate the strips on either side of the bit plus the width of the workpiece (Fig. 2).

Then cut two slots parallel to the long edge of the plate. These are for securing the strips (Fig. 1).

set-up. To set up the jig, start by positioning the spacer strips in relation to the bit (first drawing in Fig. 2).

Then the clamping strip needs to be positioned so it rides along the other edge of the workpiece (second drawing in Fig. 2).

Now the router bit can be adjusted to the desired depth of the flutes, and the flutes routed in a logical sequence (see "Using the Jig" below).

Note: It's a good idea to start with a test piece to get a feel for using the jig. And it heips if the test piece is the same widtli as the actual workpiece.

stopped flutes. For stopped flutes, like on the Classic Bookcase, simply clamp a block on each end of the work-piece (Fig. 3).

SPACER STRIPS SLIDE IN SLOTS IN BASE PLATE I ^-14

note: NOTCH ALLOWS STRIPS TO PASS UNDER BIT

SPACER STRIPS SLIDE IN SLOTS IN BASE PLATE I ^-14

note: NOTCH ALLOWS STRIPS TO PASS UNDER BIT

_i cross sections

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