Nitro Alley Inc. sandblasted the main sign (left) after which Curt Lout inspected the mask and depth of the blasting (above). The metal frame cut and welded to shape (left) then fitted inside the spine of the toothbrush (right) and placed on a Rhino Mat to square it up. who specializes in sandblasting, to finish the material removal, which Al accomplished within an hour. The next major step was cutting and welding the square stock to shape. After measuring, we determined the angles by laying out the materials on a Rhino Mat with 1-in. increment grid lines. Using the grid, we adjusted the angles to achieve square. Once welded, we inserted the frame into the routed-out portion of the toothbrush. Along with testing the fit, we hooked up the finished signs to check the stability of the frame (which was originally designed to hold only the main sign). The additional weight of the doctors' signs stressed the frame and moved us a half-inch from square at the length of the signs. Reinforcing the frame then took top priority. We cut and rewelded the frame while adding upper and lower support bars to alleviate the flexing. FILLING A CAVITY The following week we arrived at the install location and removed the previous sign. We blocked the bottom of the post hole to keep the new sign from sinking in the soft soil. To allow the groundskeeper room to trim around the sign, we increased the height between the bottom of the toothbrush and the ground to 12 in. We then mounted the ¾-in. square stock inside 1-in. square tubing that was set in concrete. The sign frame and square tubing were subsequently bolted together to allow easy removal. As is common in South Dakota, a storm quickly started to brew. Within SIGNSOFTHETIMES.COM 51http://www.SIGNSOFTHETIMES.COM