Step 1: Open or Reset Max to begin this 3d modeling tutorial. From Create, Geometry create a Sphere with 16 Segments and a Radius of 50cm. After that convert the Sphere to Editable Poly. Right click on the screen, Convert to>Convert to Editable Poly.
Step 2: In the Top view(press "V" on your keyboard to switch between viewports) from the Modify tab select the Edge selection mode. Using the Cut tool create 4 new segments like you see below. When you move the cursor on top of a vertex you can see it change. Click on the vertex then on the other vertex to make a Cut, right click to finish the Cut.
Step 3: Select these edges and holding down CTRL press on Backspace or click on Remove. Either way you go don't forget to hold down CTRL, this will remove not only the edges but the vertices to.
Step 4: In Vertex selection mode selected the two vertices I've marked below and using the Select and Scale tool scale them down in the Y axis direction until 90.
Step 5: Now select the other two vertices and scale them down until 80, also in the Y axis direction.
Step 6: In Polygon selection mode select the polygons i've selected. Press DEL on your keyboard to Delete them.
Step 7: To continue this 3d modeling tutorial form the Modifier list add a Symmetry modifier and change the Mirror Axis to Z. Convert the Object to Editable Poly again or right click on the Symmetry modifier and chose Collapse to. Click Yes on the pop-up window.
Step 8: First select one edge and after that click on Loop to make a loop selection. After that click on the little box next to Chamfer and change the chamfer amount 2.0cm.
Step 9: Chamfer the Edges again only this time change the amount to 0.20cm.
Step 10: Make a new edge loop selection of the following edges:
Step 11: Chamfer the edges with an amount of 2.0cm and after that with an amount of 0.2cm.
Step 12: Continuing with our 3ds modeling tutorial exit selection mode and from the Modifiers list apply 3 Modifiers. First add a TurboSmooth modifier, second add a Spherify modifier and third add an Edit Poly modifier. Don't change any settings. If you want a smoother result change the Turbosmooth Iterations number to 2.
Step 13: In Edit Poly modifier select the Edge selection mode and make a Loop selection of the following edges:
Step 14: Now hold down CTRL and click on Polygon selection mode icon(little red square) to convert the selection to polygons:
Step 15: With the polygons selected click on Grow one time to grow the selection, after that click on the little square next to Bevel, change the Bevel type to Local Normals, the Height to -0.25cm and the Outline to -0.5cm.
Step 16: For the last step of this 3d modeling tutorial add another Turbosmooth modifier.
Done! Our 3d modeling tutorial is finished. Comment if you get stuck following this 3d modeling tutorial.
Here is the result of this 3d modeling tutorial: