Build a Bathroom Sink Cabinet

Once you've successfully cut the dovetails and the groove for the drawer bottom of the bathroom sink cabinet, we're almost ready for the assembly of the drawer. However, we first need to cut the drawer bottom.

From a piece of 1/2" sanded plywood, cut a piece measuring 32 1/2" by 21 1/2". Sand the entire piece including the edges to smooth out any cut marks. It would probably be a good idea to sand each of the four drawer side pieces at this point as well.

After wiping all sawdust from the drawer bottom and four sides, we're ready to begin some assembly. Place a drop of glue in between each of the tails of one of the side pieces, and spread the glue using a small brush or thin piece of scrap stock. Try to spread an even layer of glue on all surfaces that will come in contact with the pins that will attach to the tails.

With the glue evenly spread throughout the tails on one end of the board, slide the front pin board into place. Your joint should be just loose enough to be able to slide together without needing to be tapped into place with anything more than your hand, but if you need a bit of force, use a rubber mallet to close the gaps in the joint. Wipe off any excess glue that escapes from the joint immediately with a slightly damp cloth.

Repeat with the tails on the other end of the side piece, and insert the rear pin board in the same manner.

Stand the assembly on edge and spread the front and back ever so slightly before inserting the drawer bottom into place in the grooves of the front and back piece. Slide the bottom down until it settles into the groove of the tail board (the side piece) as shown in the picture above. There is no glue applied in this groove or to the drawer bottom, as it should be allowed to essentially float in the groove.