This clock is 40 inches in diameter. I used 1x8s to make the clock face, with about 1/2 inch between each of the planks. I secured the planks with two 1x1s screwed into the back of the planks (you can see bits of them in the picture). This also provided enough room in the back of the clock for the clock mechanism to sit without hitting the wall. 

We set up the boards, traced out a circle on the boards and then separated them to cut the curves with a Jigsaw (I think- my husband did that part). Put the boards back together with the correct spacing and screwed the 1x1s into the back to hold the clock together. 

To make this clock I ordered the KIT37 Clock Kit from Coastal Tide Clocks ($30). The clock mechanism is a little big thicker than we had hoped so we ended up having to chisel out a space for the mechanism in the back of the clock so that the hands of the clock would come all the way through. But now it works great!

I painted the clock the blue color, sanded it to give it a distressed look. I then used Roman Numeral stencils from Home Depot (made for mailboxes) and painted on black numbers. Sanded the whole thing again to distress the numbers. Stuck on a picture hanging kit and put the clock over the fireplace! 

We love it and my mom asked me to make her a smaller version in cream for above her fireplace!

All in all it cost me less than $50 and maybe 3 hours of work (not including drying time). Quick and easy!