This new technique developed by Harold Balazs was a response to the problem of incorporating a new addition to an old stone exterior building. In preparing the mold, Mr. Balazs first drew wavy lines in a rhythmic sequence on a 9 foot by 16 inch by 4 inch styrofoam planks. He then cut along these lines with his band saw, cutting completely through the styrofoam. Next he rotated each piece individually 90 degrees and made wavy, undulating cuts to varying depths. These pieces were then taken to the site where the inside forms for the walls had been placed. The styrofoam pieces were attached lightly with finishing mails and the entire surface was coated with form oil. Then the steel reinforcing was placed and the outside form put in place. Within 48 hours the forms were removed. Removing the styrofoam was a bit more difficult than had been anticipated because in the samples Mr. Balazs had made, the forms had been laid flat. Mr. Balazs feels that the tilt-up technique would work best because the form oil could not so easily leech off.