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Feature Article


Photo by Ryan Pechnick School of Fish by Sculptor, Kakkee Negeoseak by Erich Knoespel, Artcast, Inc. I


nvestment casting has been used to create artwork since before recorded history and the process has remained


unchanged... artists use some type of refractory material to encase something soft that they can melt out, and then pour molten metal in. Fast forward to 2019, and the steps required to create a casting are still the same but the technologies at each step of casting have gotten much better. At art foundries like Artcast, Inc., we have the ability to use ceramic shell, steam dewax, induction melting, welding, and additive manufacturing. Today’s technologies, specifically additive manufacturing, have started to simplify some of the more time- consuming portions involved in creating large scale public sculpture. In late 2018, the Royal Botanical Gardens in Burlington, Ontario wanted


12 ❘ August 2019 ®


to create artwork for their reflecting pond in order to extend the Dan Lawrie International Sculpture Collection on their grounds. Cobalt Connects, who organized the project, chose Artcast, Inc. to complete the project knowing that we have experience with enlarging smaller original works into large bronze public artwork. The piece chosen to be enlarged was School of Fish by Kakkee Negeoseak, an Inuit stone carver. At our foundry, we create sculptural


enlargements using one of three methods. Freehand enlargement, Scan- Assisted enlargement, and Full-Digital enlargement. Freehand enlargement is the more traditional method of enlarging a sculpture. However, it is a completely manual process involving potentially inaccurate calculations, human error, and has become more cost-prohibitive


unless the artist can do it themselves. The most common is Scan-Assisted,


which utilizes 3D scanning technology and multi-axis milling equipment. This method doesn’t require a particularly high-resolution scan file as the details will be added with a sculpting medium that is applied to the surface of the milled Styrofoam. For School of Fish we chose to use our new favourite method which is the Full-Digital enlargement. Full-Digital takes a high-resolution 3D scan and a pattern is produced directly from the 3D file. We are able to control the size of wax panels we receive, as well as achieve a perfect wall thickness. One can already see how 3D


scanning has become a critical technology for foundries. Technologies improve rapidly and are hard to keep up, especially financially. We prefer


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