Extrusion with Flat bottom

Rhino Rhino for Windows
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1

I want to extrude all this sloping surfaces 1’-0" down from lowest point of individual surface, keeping bottom flat. Such that minimum height of extrusion is 1’-0".

Trial.3dm (3.4 MB)

image
image1143×424 6.53 KB

2

Hi Pranav,

Your model has surfaces and curves in it. Assuming you just want to extrude the surfaces to create solids, one way would be to:

  1. Select the surfaces.
  2. Create a bounding box around them, extract the bottom face and delete the rest of it.
  3. Move the remaining face down 1’.
  4. Select the surfaces.
  5. Use Extrude Surface to Boundary from the Solid menu. Select the face as the boundary. This will create solids with a common base level.
  6. Delete the face.

If you wanted to extrude the curves, you would need a slightly different approach:

  1. Select the curves.
  2. Create a bounding box around them, extract the bottom face and delete the rest of it.
  3. Move the remaining face down 1’.
  4. Select the curves.
  5. Extrude them downward with the gumball, well below the face.
  6. Use the face to trim the extruded surfaces. This will create tubes with a common base level.
  7. Delete the face.

HTH
Jeremy

3

Hi Jeremy,
Thanks for the solution, it worked!