Funbox

Price: $1000

The funbox can come in many shapes and sizes. The one in these instructions is perhaps the most basic version. A funbox will provide an endless number of air/grind possibilities, as well as give lots of room for expansion.

What You'll Need

Fourteen 4'x 8' sheets of 3/4" plywood
Nine 4'x 8' sheet of 1/4" hardboard (masonite)
Sixty 8' 2x4's
~26' black steel pipe
Steel pipe
something to cut the pieces with
A pencil to mark your cuts
Deck screws and a drill
One tape measure
The required safety gear

Cut List

--- Description ---	--- Dimensions ---	--- Quantity ---
	MATERIALS CUT LIST
3/4" treated PLYWOOD	4' x 8'	14
1/4" masonite (hardboard)	4' x 8'	9
treated 2x4	7' 10 1/2"	26
treated 2x4	7' 1"	2
treated 2x4	1' 4 5/8"	4
treated 2x4	7' 7 1/2"	8
treated 2x4	6'	3
treated 2x4	1' 4 1/2"	12
treated 2x4	1' 2"	14
treated 2x4	1' 3 3/4"	6
treated 2x4	5' 4 3/16"	2
treated 2x4	~8'	6
treated 2x4	7' 10 1/2"	26
screws	3" deck screws	150-170
screws	1 1/2" deck screws (for plywood)	100-130

Cut the side pieces (2x)

Take one 4'x8' sheet of plywood and make a cut from one corner, to halfway up the other side (as shown in the picture below). This larger piece (top) will be used for the ledge, and the smaller piece (bottom) will be used for the wedge ramp. You will need to do this step twice (one for each side of the funbox).

Start framing

You will need to cut 2x4's to the length of 7' 10 1/2" and screw them across 8" apart. To make this step easier trace the smaller wedge onto the larger sheet of plywood so that the 2x4's end up in the right spot. Each 2x4 should have two 3" screws in each end to ensure maximum strength. You will need to do this step twice, although you will need to mirror it the second time to make sure the ledge ends up on the right side (see next step for a visual of what it will look like).

Join the two sides

The next step is to join the two wedge ramps together. For this you will need to attach a 2x4 across the gap so that it is sitting right underneath the crossing 2x4's. Then, to add support, a 2x4 should be added underneath each end of that bridging 2x4. Repeat this step on the other side of the ramp and them move on to the next step.

frame the table

The next thing that should be done is to add a 2x4 on top of the ones that were added in the previous step. From here, 7' 7 1/2" 2x4's will be screwed across at 8" apart to form the frame of the table.

Begin work on the ledge

Begin this step by cutting out two more ledge pieces (as in step 1), and take two more 4'x8' sheets and cut them to 4'x6' for the middle ledge.

Now start to attach 1' 4 1/2" 2x4's across the ledge pieces as seen in the picture below.

Add more cross pieces

Before any more cross pieces are added, a 2x4 needs to be screwed to the 'ramp side' of the ledge, which will be what the steel pipe will rest on. Then 1' 2" 2x4's can be screwed across at approximately 1' 2 1/2" apart from one another.

Add another layer of 2x4's

This layer of 2x4's will be what forms the coping shelf. Simply screw on a square frame of 2x4's to the existing frame as seen in the picture below.

Screw on the first layer of plywood

Since there are no curves on this ramp, one layer of 3/4" plywood will suffice. Use 1 1/2" screws for this and screw on the plywood like the picture below shows. Be sure that each seem in the plywood both starts and ends on a 2x4. If you need some more tips on how to screw on plywood, you can visit our Screwing on Plywood tutorial for more info.