We really needed an ottoman for our living room. We have been balancing a pillow on an old stool, and it was just not the right height nor nice looking!
First I measured what height I needed to make it work comfortably and then worked backwards from there using the measurements that I did know.
The foam was 5" thick and from an old couch cushion. I cut it to a size of 15 1/2" wide x 14" deep, which seemed a good size to fit two outstretched legs and feet. The legs I used for the ottoman were from an old chair, I stained them a dark brown to match the legs of our chair as well as our couch. I used 1/2" plywood under the foam and another piece above the legs. I just needed to do some math to figure out how long the pine ship lap boards needed to be to cover the small wood frame that holds the ottoman top to the bottom.
So, in other words I had to solve for x and add a bit for overhang so the top of the legs which are screwed into the bottom of the plywood, are covered 1/2" by the pine sides.
So, to put this thing together, first I put a piece of canvas drop cloth over the foam and stapled it to a piece of plywood that I sat the foam on.
I fussed with the corners and then stapled everywhere I needed to, to keep the material on the plywood as neatly as I could. Previously, I showed the ship lap I made out of pine. I decided to paint the pieces and some nice people at the Dixie Belle Paint Company sent me some paint samples, so I used that. This is a nice creamy mineral paint that covered my pine in only one coat. I used Blueberry, but they have many colors to choose from.
Then I attached a second piece of plywood to the top of the four corner braces. The pine is attached all around this to cover the sides, and the legs are screwed into the bottom of the plywood. The following photo shows the ottoman upside down.
I painted stripes on the top, also using the Blueberry Dixie Belle Paint.