This is a small fun box I built a while ago and thought I'd share it. It's a variation of Bud Stratford's box plans. I really liked his idea to make a curb sized box. This way I can make stands to raise it or lower it for variation. I plan on making 10" removable stands to raise the box to approximately 18".

Since I skateboard and rollerblade, I decided to put angle iron on one side and 2" coping on the other side (the major difference between my box and Bud's Box. Once I get the stands built, the versatility of the box will be awesome.

The approximate dimensions of the final box are 6' long, 2' wide, and 7 3/4" tall. You could easily make it longer, wider, and taller to suit your needs. I made it smaller for easier storage, plus I'm more of a fan of shorter/technical grinds.

Here are some basic instructions (refer to Bud's instructions for plans and more details/options):

Build the lower frame

Cut 5 - 21" 2x4s and 2 - 6' 2x4s.
Assemble the frame placing a 2x4 every 18" on center.

Build the upper frame

Cut 5 - 19.5" 2x4s and 2 - 6' 2x4s.
Assemble the frame placing a 2x4 every 18" on center.

Attach the 2 frames together

Cut 7" 2x4s braces. You can cut as many or as little as you need. 4 is probably the right amount, 2 at the least. (You can make these taller if you want a taller box. If you do this, cut 6 braces and gap the 2 frames accordingly)
1 frame will obviously be less wide than the other, this is for the coping. Align the frames so 3 sides are flush... leaving room for the coping on the other side.
Place the brackets near the corners on the inside of the frame. If only using 2 brackets, place them at opposite corners.

Attach the coping Support

Find a 2x3x6' (I found one at Menards) or cut your own, and attach it in the notch where the coping will go. This will set the rail up high enough to be grindable.

Create the deck

Cut a 3/4" sheet of plywood to 6' long and 22.5" wide and attach it to the top of the box.

Attach the Angle Iron and Coping

Attach a 6' piece of angle iron to 1 side of the box.

Drill a hole in each end and counter sink the iron with a bigger bit so your screws will be flush with the metal.
Pre-drill holes in the wood so you be sure not to break off the wood screws.

Attach a 6' piece of 2" diameter pipe to the other side of the box. You can use any of the methods mentioned on this site. I personally drilled a hole 3" from each end of the pipe. Then I drilled another hole at an angle through the top frame to the underside of the ramp. Then I popped a bolt through each end and it's extremely.

Skate on the rest of the day.