Planning how to use the styrofoam cutter

Of course i didnt build the styrofoam cutter just for fun. we want to put styrofoam under our pool as isolation. But our pool is round. I could now go outside and lay out the platters and draw on them where to cut them, or i could use modern technology for this. Of course I used the latter :P

First i opened GIMP and created a new picture measuring 400x400 pixels (pool is 3.66m in diameter and we want a bit of overhang). I then drew a circle spanning the full width of the picture and placed rectangles to cover it. My styrofoam sheets are 0.5m x 1m in size so i used rectangles measuring 50x100 pixels. The result is this:

With this pattern i can propably save 4 or 5 of my 32 styrofoam sheets. Now i have to layout this onto my sheets. And here is the layout:

On the left the white stuff are leftovers. As you see i can save 2 sheets. But i managed to put one piece twice in a sheet, so i save a third one on the other half (wohoo 5 sheets saved!). The whole thing is symmetrical so i have to cut out each piece twice. Thats what im going to do the next days :D

little update: today i cut all the styrofoam sheets and of course i fucked it up and did not save the 5th sheet -.-. But otherwise it worked like a charm :D