August 2012 Archives

Arboretum Mold

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Graduate students Daniel Dean and Ryan Wurst worked on a project for the Minneapolis Arboretum called Underground Sound. This field of sonic flowers allows viewers to listen to the sounds of the earth via giant megaphones.
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The mold for the megaphone was designed in Rhino and imported into Enroute as an .STL. We created all the toolpathing in EnRoute. The form was cut in pieces on the CNC router using a 1/2" wide by 3.5" tall ball nose bit. Because our router only has a 6" z-clearance, Daniel glued together panel board to be 3.5" deep and divided the megaphone up into various sections. Once cut, the sections were glued together to create the final form, which was then used as a mold for the fiberglass.

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Art Department Signs

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The router has been busy, as we've been creating some signs for different areas of the Art Department, including the Tool Crib, 3D lab and e-studio.
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THINK AND WONDER, WONDER AND THINK

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The Department of Art CNC Router Technician Robin Schwartzman completed her giant letter project THINK AND WONDER, WONDER AND THINK for Northern Spark this past June. Each letter was 8' tall by varying widths. They were designed in EnRoute and cut in pieces out of 1/2" MDF using a ShopBot Buddy with a 4' x 8' bed and 1/2" end mill bit. The router belongs to the shops of American Woodworker Magazine, where editor Randy Johnson was very generous in volunteering his time and knowledge to help make this project happen.
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Here you can see the daytime view. Each letter was painted red with exterior latex paint.
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This is a nighttime view of the word WONDER from the Guthrie Theater. Photo courtesy of Mill City Times.
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And here is a panorama shot focusing on THINK taken during the festival.
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Custom Beer Bottle

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Our laser technician Anthony Kling wanted to create a custom beer bottle made of slip-cast porcelain. The first step was to create a positive for a mold, which we did using the router and stacked sheets of glued-together MDF. Here you can see the final design in EnRoute.
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We started with a couple of rough passes using a 1/2" ball nose bit to clear out excess material.
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Then we used a 1/4" ball nose at an 85% overlap to create the final smooth finish.
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The two halves will be glued together to create the whole positive.
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Wood Tray for Ceramics

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Yesterday we created this simple, yet beautiful piece for graduate student Terry Hildebrand's ceramic tea set. He found a piece of wood, which we then carved circles out of at a specific depth with exact diameters to perfectly fit his cups.

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