Cutting the Dadoes and Pyramids

Carefully layout the dado locations on the posts and center slats. Use a set-up block clamped to your table saw fence for cutting the 3/4" wide by 3/4" deep dadoes, and be sure to test your cuts on scrap before cutting into the bookcase pieces. Start by cutting the top and bottom dadoes in the posts, then the one for the middle shelf. Follow the same steps for the center slats after the posts are done. Make sure the dadoes on each piece are all exactly 12" apart; otherwise it will be difficult, if not impossible, to assemble the bookshelf.

For the pyramids on the posts and center slats, tilt the blade 15 degrees and adjust the fence set-up so the blade cuts to the middle of the stock. Test your set-up on scrap wood first to make sure it works right. Once you're satisfied, cut the tops of the pieces, then readjust your set-up and cut the tops of the slats (pieces 4).

Drill 3/8" diameter x 3/8" deep counterbores at the screw hole locations in the posts and slats, then drill pilot holes through the stock at the center of each counterbore.

Sand the pyramids with sandpaper wrapped around a wood block, being careful not to alter the shapes too much. Start with 100 grit paper and work up to 180 grit. Once the pyramids are well formed, sand the rest of the bookshelf to 180 grit. Be sure to ease all the sharp edges.


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Plan adapted from Today's WoodworkerTM Magazine, Issue 19, January 1992.

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