64th Technical Conference & Equipment Exposition FINALISTS
Artist Original Work 3D Printed T
he artistic process started with a bronze figure made from a partial wax which was created with a rubber mold, and then scanned. The artist
used the scan to complete the interior walls. They then modified the original digital file to remove some parts of the figure and open up the closed areas. The interior structure was then added in pieces that intersected the walls of the figure. Then, with only a 3D digital file to work with, a physical original had to be made. The figure was cast in one piece as the overall dimension easily fit into
Artcast’s production capability. “The interior wall was challenging, as the shell would be difficult to remove without caustic baths and the size of the piece made it difficult to work with strictly investment,” explained Erich Knoespel of Artcast, Inc. “We found a solution when we decided to build a solid mold only for the figure and then encase the solid mold and the gating with ceramic shell.” The finish required a light grinding of the exterior to remove the layer build lines left over from the binder jetting process. Final finishing and a clear wax was applied last.
PART: Devorah by Blake Ward Size: 24” tall
Alloy: C87300 Everdur Notes: Various types of molds and a 3D scan were used to help guide the vision of the artist.
Casting Conversion Improves Design, Reduces Cost “O
ur customer came to us for help with creating a better part, by making a casting from a part that was originally designed
as a fabricated part using machined components welded together. After reviewing their part, we suggested changes to the design not only to make a better product but also to create the casting for much less,” Paul Leonard, engineer at Aristo-Cast, Inc. stated. The part is a pressure measurement device used to measure fluid
flow velocity and is very important to aircraft flight, measuring the air speed. The difficulty with this component are its most important features, the casting’s internal dams. Each of the 4 dams are turned 90º from the one in front of the other and located in an 0.286” diameter tube, allowing air to enter and while keeping moisture out for accurate wind speed measurements. X-ray verification was used to verify all 4 dams were completely filled.
PART: Pilot Tube Size: 6.00 x 4.00 x 1.00” Alloy: Inconel 625 Notes: Fabrication conversion improves design and reduces cost.
® Artcast, Inc.
Aristo-Cast, Inc. October 2017 ❘ 25
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