Measure across the face of the drawer from side to side and mark the center of the face.
Adding a drawer under a table.
Cut 1 3 frame parts to match the plywood dimensions then glue and nail them together with 1 1 2 in.
Measure the cavity under the cabinet and cut a piece of 1 4 in.
Build the drawer frame.
Add the drawer bottom.
Narrower and 1 4 in.
If you re interested in a uniform look use an unfinished drawer and wood slats then stain everything to match.
Shallower than those dimensions.
Place the drawer on the countertop or a table.
All you need to do is make 45 cuts into two pieces of wood then attach them together at a 90 angle.