Build a Bathroom Sink Cabinet

With the drawer bottom in place, we'll attach the opposite tail board using glue in both dovetail joints.

Place an appropriate amount of glue into the tails on both ends of this last side piece and spread the glue evenly throughout each joint. Place the board into it's proper location and tap into place. Make sure that the drawer bottom is in the groove of this tail board before completely closing the dovetail joints.

TIP: Be sure to work quickly spreading the glue in the joint. You'll want to get the joint assembled before the glue begins to dry.

Use a tape measure to measure diagonally across the completed drawer box from one corner to the opposite corner. With that length in mind, measure across the remaining two corners and verify that the length matches the first measurement. If the two numbers match, the box is square.

Using some long clamps and some scraps of stock (to protect the sides of the drawer box), clamp the joints in place to allow the glue to dry. While is isn't necessary to crank the clamps so tightly that all of the glue squeezes out of the joint, you likely will have a little bit more glue escape as a result of clamping, so be sure to clean it up as soon as possible after clamping.

Next, before we move on to the cabinet, this would be a good time to glue up the door panels.

You'll need six pieces of 1x8 ripped to about 6 1/8" in width and cut to a length of about 22 inches. (It is a good idea to leave the panel a bit big for trimming after the glue-up, as the finished size of each door will be 18" x 21 1/4".)

If you have access to a jointer, joint the edges of the boards and then line them up in the order that you'll want to glue up the doors. Mark some locations for #10 biscuits and cut slots using your plate joiner. Insert a bit of glue into each slot and add biscuits. Then clamp the panels for drying.