Sign & Digital Graphics

November '17

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60 • November 2017 • S I G N & D I G I T A L G R A P H I C S ARCHITECTURAL AND ENVIRONMENTAL The upper section of each post was made from 2½" square steel tubing, which would slide into the larger tubing. Making the posts sectional kept them light and easy to work with for one man, and allow the parts to fit easily in an oven for powder coating. Small square bush- ings made of 1/8" steel sheet provided the proper telescoping fit and a cap over the larger tubing. After all parts were made, they were taken to the powder coating shop where they would be coated to a nice glossy maroon. The aluminum "extrusion" parts, the brackets and fittings, and both two-piece posts were coated at the same time on two racks. This durable powder coated finish will protect the parts from rust and corrosion and it is very likely they will outlast this old sign maker. Out in the field, once more I got my upper body workout by digging post holes by hand and setting the lower half of the two-part posts in concrete. Care was taken to not only get them level, but get the tops of the posts on the same plane as well. After the concrete was set, the next day the component construction began by dropping the upper post sections in place. They fit snuggly but not tight, and needed no fasteners to hold them in place. The next step was to put the top main " C-shaped" brackets in place at the top of the posts, and then secure the top picture frame member perfectly centered. Everything else would hang off these brackets until the other three sides of the picture frame were put together, and then the lower " C-shaped" brackets were put along the bottom of the frame, and were attached to the frame and the posts with both rivets and screws. Some "serious" self tapping screws were used to hold top and bottom main brackets to the posts. These steps did not take long, no welding was required, and the frame members fit together just like they did in the shop. I forgot to check the frame for squareness before it was attached to the posts, but the tight fitting mitered Here are all the aluminum fittings, plus some steel bushing for our telescoping posts. The posts were in two pieces to fit in an oven and keep them light. These fittings were made to secure the corners of the main sign frame mem- bers. A few of the brackets were formed on a sheet metal brake to complete their fabrication. These triangle fittings are to be used to secure the frame uprights where the faces would join together. The uprights are made of more 1.25" x 1.25" aluminum tubing and support and join the face panels.

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