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Up the Down Staircase ... the Saga Continues

11/28/2012

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    This is a progress report on the continuing tale of the sphere of ascending and descending stairs made of the wax casts described in my blog entry of 9/11. The sphere itself has been completed. The next step in the plan is to proceed with gating the piece using a large main gate which will go through the center of the ball and feed up from the bottom through several sprues. I have made openings at opposite sides of the ball, taking out small sections which will be cast with the piece and reattached after the piece is chased. The large central main gate will allow me to make the mold smaller and the heat it will hold will also help minimize warping in the piece by evening out temperature in the center of the mold as the hot metal cools. The tricky part will be to devise a gating system that will force the bronze to flow completely through all of the angles and planes and exit the vents...a bit of an engineering challenge, but, as I have said before - I enjoy a challenge. 
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Simplified gating plan...all projections & angles must be gated or vented
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    Author

    Cynthia Smith, Maine artist, originally from Connecticut. Taught art at secondary level for 35 years, retired in 2004. Sculpts in bronze, wood, stone, clay & plaster. Her work can be seen at several mid-coast Maine galleries and shows.

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