• 
  First draw a 5×5 square in top view. Use Snap feature for easy use.
• 
  Then fillet the corners using Fillet command with a radius of 1
• 
  Extrude the rounded square 1 unit in another view.
• 
  Use FilletEdge to fillet edges of this polysurface.
• 
  You can change fillet radius by clicking on CurrentRadius and then enter an appropriate radius. I used 0.2
• 
• 
  Tip : You can select all edges with a rectangle all over the polysurface.
• 
  Press enter after you select all the edges and rhino will complete the fillet.
• 
• 
  Draw circles with radii given and then move the smallest one as seen above.
• 
  Use tangent lines to trim large circles.
• 
  Complete the trim as seen above and then use  Join command to join closed curves.;
  This way you will have closed polysurfaces instead of surfaces.
• 
  Without deselecting the curves use  Extrude command to extrude those curves one unit.
• 
  Use  FilletEdge again with a radius of 0.1 this time to fillet edges of those solids.
• 
  Polysurfaces after fillets completed.
• 
  Position newly created solids in top view as seen above.
• 
  Move them upper  in z direction.
• 
• 
  Use BooleanDifference command to subtract those solids from the base polysurface.
• 
  Our 3d RSS model is complete! Now let’s give it a color.
• If it’s one piece we may have to use explode before coloring its pieces.
• 
  Select base part and then select Material from the dropdown in Properties window.
• 
  Select Basic in Assign By frame and then click on white rectangle next to Color to select a base material color.
• 
  You can select yellow as Gloss Color.
• 
  And here is our 3d RSS icon completed in seconds!!

  Now you can create your own 3d rss icon so easily and fast.

• You can download my 3d model from here: Online 3d model library : 3dmodelmax.com
  

Related titles

• How to model connected holes in Grasshopper (0)
• How to run a rhinoscript file (0)
• How to start Rhino in perspective view (0)