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GREEN QUOTIENT 

(image)	METHOD	MATERIAL	COST ($/sf)	TIME: file prep	TIME: fab	TIME: assembly	TIME: total	MATERIAL	RECYCLABILITY
Image Added	CNC milling - smooth terrain	white foam	$8	7	2				0.25	9.25	yes (special service provider)
Image Added	CNC milling - smooth terrain	plywood								$40	9.5	Expand title 6.75 2.25 h to mill the base, 4.5 h to cut the buildings	1	17.25	yes (if unpainted)
Image Added	CNC milling - smooth terrain	hardwood (poplar)	$34	9.5	Expand title 6.75 2.25 h to mill the base, 4.5 h to cut the buildings	1	17.25	yes (if unpainted)
							CNC milling - smooth terrain	high density foam	$83	7	2	0.25	9.25	no
Image Added	CNC milling - stepped terrain (fine)	white foam	$8	14				3.6	0.25	17.85	yes (special service provider)
	CNC milling - stepped terrain (1/16" contours)	white foam	$8	7	2			0.25	9.25	yes (special service provider)

File preparation: Rhino

Image Added

1. Generally, the rhino file prepared for milling must contain the following layers:
   1. Stock: a box, at the world origin, representing the size of the block of your milling material.
   2. Topography:
   A
   1. a single NURBS surface for smooth terrain, or a series of flat surfaces for stepped terrain.
   2. Features:
   Layer
   1. layer(s) with NURBS surfaces for roads, water, etc.
      1. For each features layer,
   include
   1. 1. there should be another layer with boundary curves for each feature surface.
   2. Buildings: If buildings are to be milled with the base, include a layer with NURBS surfaces at the tops of buildings.
      Also include a
      1. 1. A layer with boundary curves for each building top surface.
      2. Buildings too large or too small to be milled with the topography need pockets. Include a layer with curves outlining the bases of these buildings (at the z depth you want the bottom of the pocket cut).
      3. Final contour: a layer with a curve tracing the four outside edges of the topography layer, and the same curve projected to z=0.
   3. This file can be imported directly into Mastercam.

   File preparation: Mastercam

   1. Step 1
   2. Step 2See the CNC tutorial for more detail. In general, you will need to use a template MasterCAM file, import your geometry, assign it to pre-defined toolpaths and adjust the toolpath parameters for your material.
   3. Files must be submitted to CNC TAs for review and approval.

    

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