Bookcase with Angled Back

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Blog entry by lobro4 posted 09-27-2014 12:32 AM 2561 reads 0 times favorited 0 comments Add to Favorites Watch

One of my partner’s daughter needed a book shelf to fit into an odd space. There was 26” of flat wall and then 13” of wall turned in at 45 degrees. At 11-years old, she needed a space for books and trinkets.

My design was to make a series of fixed shelves the would be embedded in the back and honeycomb through the shelf on one side. The build is solid 4/4 poplar for the carcass, face frame and shelves. The back of the main compartment is 3/4 poplar plywood and the back of the side compartment is 1/4” poplar plywood. Color is two coats of General Finishes Medium Brown Dye. Top coat is water-based poly sprayed on with my Earlex.

First: Dado out slots for the shelves in the back at 3/8” deep.

Now remember that the angled part of the wall was 13”. Using geometry, this meant the the depth of the shelf and back would be 9”. The total length of the long shelf is 26” including the 3/8” thickness of the outside wall, after the dado is cut, to the outside of the notched, inside wall. The inside wall and the inner end of the shelves have 3/4” slots to allow them to inter connect. The edge of the notch is right at the point where the 45 degree angle starts

Detail of how the back edge of the frame is cut to allow the plywood to seat in and engage the shelves. The dado is 3/4’ deep and the shelves protrude 3/8”.

Seat the back in place and the cabinet is self-squared when is comes time for glue up!

The 1/4 plywood for the side shelves if simply screwed in to place. Both edges will need to be cut at 45 degree angles that are perpendicular to each other. A note about the face frame: it needs to be made just a hair long on the angle shelf side to cover the front edge of the 1/4” ply! The face frame is pocket screw assembly.

Thanks for looking!

-- Rock Chalk Jayhawk Go KU!!

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