The Pinawa Heritage Sundial

Pinawa Heritage Sundial Conceptual Design
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Gnomon

After the gnomon was removed from the shop it needed to be sandblasted to remove the mill scale and expose the raw steel. This would bring all the steel surfaces to a common starting point. There would be no impediment to oxidization and as soon as water touches the surface the formation of rust would occur immediately.
Sandblasting area and equipment. Sandblasting in progress.
These photographs show the gnomon in the process of being sandblasted. The 12 inch square hollow steel section upon which the gnomon is mounted was also sandblasted. A medium grade of silica sand was used. The air compressor was a portable diesel powered unit. The sandblaster was a very old one and required a little tinkering to get going but it did an excellent job. There were a few us who got to dress up in the space suit and have a little fun.

Gnomon sandblasted on one side. Here the sandblasting of the gnomon has been completed on one side. The mild steel has a very nice mat gray finish. Before we finished the second side it had rained. It was amazing to see how quickly the rust formed. The variation in the colours was excellent and made a very unique and interesting finish.

Moving the Galion into position. Flipping the gnomon over.
Once outside we no longer had the use of the overhead crane. In order to flip the gnomon over to sandblast the other side it was time to call upon the "GALION". With its extendible boom and large lifting capacity it did not take long to turn the gnomon over. Progress was impaired slightly after this as it rained for a few days. The gnomon was finally sandblasted and ready to be moved to the site.


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Canada Millennium Partnership Program Western Economic Diversification CanadaWinnipeg River Brokenhead Community Futures Development Corp. Manitoba Culture, Heritage and Tourism

Local Government District of Pinawa