This skateboard wall rack efficiently stores a ton of boards on the wall and adds class to an otherwise messy situation. This design can be scaled for as high as your wall. Additionally, there are 2 patterns, one holds more boards packed in there, the other fewer boards, but with space to store a helmet on top of each board; both are awesome.

Supplies

Material

2 Pieces: 6’ feet x 7”inches x 1/2 thick plywood or OSB (oriented strand board) for the walls, 1/2" thick - Or 4' feet long if making a 6 board holder
3 Pieces: 2x3 or 2x4 - 9" inches long - for the middle boards holding it together.
2 strips of 2” wide plywood/OSB that will be drilled to the studs on the wall and to the skateboard wall rack
20+ screws to screw the unit to the wall and the wall unit to the 2x3 etc.
Wood glue (optional)
Paint (optional)
Skateboards - Required!

Tools:

Jigsaw
Eye protection
Electric Screwdriver
Circular saw (optional)
Radial saw (optional)
Sander (optional)
Router (optional)

Step 1: Cut and Measure the Wood

Cut 2 planks 7" inches wide and at least 4' feet long. In our example, we are using 6' foot long planks, that are 1/2" inch thick. If you can, leave it longer until you finish all your measuring so that you can make the top either flat for you to add a shelf or slanted to hold another board.
Draw a line 2" from the back of the plank to mark the back of the skateboard slits.
Draw as many skateboards slits that will fit on your plank. Note that if you want to be able to stack helmets on top of you boards, use a 7" between slits, otherwise you can pack more boards using 4.5" inches.

Note: using the 4.5" inch gap will hold 2 skateboards per foot (4' board will hold 8 skateboards) and the 4.5" inch will hold approximately 1.5 skateboards per foot (4' board will hold 6 boards)
Place and “X” in the gaps/areas that are going to be cut out. This helps prevent accidentally cutting the wrong piece off.

Step 2: Cut Out the Skateboard Slits

Eye protection - Amazon sells a box of 12 clear glasses for $12... buy it (or similar), it will be the best money you spend. You'll always have a clear set, plenty to share with you kids, and you don't have to worry about losing (and not using) your one pair of safety glasses.

Start the cutting...

Miter saw: Use a miter saw setting the angle to 22.5 degrees to get all the angles consistent and a straight cut. You will not be able to cut all the way through to the back, but this will speed things up as the rest will need to be done with a jigsaw.
Circular saw: You can also use a circular saw to cut the straight lines for each of the slits if you do not have a miter saw, speeding up the process and making the cuts straight.
Jigsaw: Finishing cutting out the rest with a jigsaw. For the inside, you could drill out the corner to make a nice rounded interior. We chose not so since you do not see it once it is filled with boards.

Step 3: Cut the Rest of the Wood

Step 4: Rout and Sand

Optional - Use a router to round the edges of the rack. Do not rout the edge that will be against the wall.
Optional - Sand it to clean things up and round off some of the corners and sharp edges.

Step 5: Paint and Assemble

Paint everything (optional)

Glue and screw together...
Dry fit the unit together placing the stud-strips in the notches.
Place the 2x4 on top of the stud-strips.
Glue and screw the 2x4 to the skate rack - DO NOT screw it to the stud-strips yet.

Mount the Skateboard

Find the studs in your wall.
Screw the top stud-strip to your wall into the studs.
Place the skate-rack on the wall and center it as you wish along the stud-strip.
Mark the edges of the skate-rack on the stud-strip.
Take down both the skate-rack and stud-strip
Glue and screw the stud-strip to the skate-rack.
Screw the skate-rack to the wall ensuring that the screws go into the studs.
Place skateboards on the rack and enjoy!!