Step 1: Import the reference drawing as a image plane on the top viewport. This reference included in the scene file download.
[Click Here for Larger Image]Step 2: Create a Polygon primitive Cone.
[Click Here for Larger Image]Step 3: Move and Scale the cone to fit the drawing. And make the cone's "Subdivisions Axis" to 16.
[Click Here for Larger Image]Step 4: Move the cone done alone the Y axis until the drawing covers the cone like the picture shows.
[Click Here for Larger Image]Step 5: Go to: Edit Mesh > Split Polygon Tool.
[Click Here for Larger Image]Step 6: Split the top polygon face according to the drawing. Use "Y" key to repeat the command.
[Click Here for Larger Image]Step 7: Select the vertices showed in the picture and scale them outwards to fit them to the drawing.
[Click Here for Larger Image](The result of scaling the vertices:)
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[Click Here for Larger Image]Step 8: Move the selected vertices upwards.
[Click Here for Larger Image]Step 9: Select only the vertices showing in the picture and move them upwards.
[Click Here for Larger Image]Step 10: Go to the side view and mode the bottom vertex up.
[Click Here for Larger Image]Step 11: Go to Object Mode and select the diamond object. And Go to: Edt Mesh > Cut Faces Tool (Option). The second picture shows the option for the Cut Faces Tool. The 3rd and 4th pictures show the cut made by Cut Faces Tool.
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[Click Here for Larger Image]Step 12: Use Split Polygon Tool again to cut the faces all around.
[Click Here for Larger Image]Step 13: Delete the bottom edges all around.
[Click Here for Larger Image]Step 14: According to the drawing, delete the edges showed in the 2nd picture.
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[Click Here for Larger Image]Step 15: Select one of the vertex and use: Edit Mesh > Chamfer Vertex, set Width to "0.15" or an appropriate number suits you.
[Click Here for Larger Image]Step 16: The Chamfer Vertex command will open up the vertex. As you can see, the opened area is not 4 sided face. So select the two vertices showed in the 2nd picture and scale them to move them closer and use Edit Mesh > Merge to merge two vertices together.
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[Click Here for Larger Image](Result of Merging Two Vertices:)
[Click Here for Larger Image]Step 17: Go around and use the same process to open up all the vertices to make them a 4 sided face.
[Click Here for Larger Image][SImple Render with this Model]
[Click Here for Larger Image][Download Scene File:]
The scene file includes: .MAX file for 3dsmax 9 and .obj file as well as the drawing used for image plane.
Download Scene File [39KB].
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