Anyone who has some woodworking savvy can build a square freestanding display case for showing off collectible Hot Wheels. You will need to have a general idea of the type of display case you want ahead of time, especially what size you need. The specific design is limited only by your own imagination and preferences; most Hot Wheels display cabinets incorporate some combination of wood and glass.
Cut four equal upright posts for the corners of the display; 2-by-4's provide good support; you can adjust the height to your personal preference, although 5 feet is a popular choice. Sand each post after cutting
Mark the position of each shelf at equal intervals across each of the corner posts. Most choose to include about four shelves in a 5-foot-tall display case. Using a router, cut grooves at each mark; the thickness of the groove should match the thickness of the glass panels you are using as shelves.
Cut 16 short end-frame pieces of the same thickness as the outer posts to brace the display case. These pieces should match the width of the glass display case shelves. You will need four braces for each side of the case.
Cut a groove along the entire length of four of the end frame pieces with the router. These four pieces will form the back of the display case. You will line up the grooves along these end pieces with the grooves across the four posts to form the supports for the glass shelves.
Stain each post and crosspiece with whatever color high-quality wood stain you prefer. Apply the stain with a 1-inch paintbrush. Be careful not to apply too much at once to avoid runs or drips in the stain.
Fasten the crosspieces to the upright posts to form the back and both sides of the cabinet using two wood screws per joint and a Phillips screwdriver. Gently slide the glass panels into place, then screw the final four crosspieces onto the front of the display case to secure them.
The shelves do not need more than 3 inches of space between, but you can choose to have more depending on your preferences.
You can use wood panels instead of glass for the shelves.