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Bookcase Shelves That Do Not Sag

Step 4Put It Together

Put It Together
The back edge of the black particle board now gets glued into the slot in the 2X4. This should be a very tight fit, because the black paint raised the "grain" on the particle board a little, but that's ok.

Lay the slotted 2X4 on the floor with the slot facing up and run a small amount of wood glue down the slot. Then start to insert one corner of the particle board and use your weight to slowly force the board all the way in and then flat. A slight rocking motion sometimes helps.

Normally, you'd expect to clamp this so the glue can dry without slipping. However, once the raw back edge of the board has contacted the glue, it will swell slightly, so it is in effect naturally self clamping.

Clean-up any excess glue using a moistened paper towel and let the assembly dry.
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Author:ProfHankD(Prof. Hank Dietz)
I'm an Electrical and Computer Engineering Professor at the University of Kentucky. I'm probably best known for things I've done involving Linux PC cluster supercomputing; I built the world's first b...
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