Today we are going to talk about modeling difficult objects of rotation. The sense of my method of modeling of such surfaces is simple first the flat model is done and then turned off in a tubule. So it is possible to make tire covers for jeep or plastic bottles for water. So we are going to begin with a tire cover:

First of all it is necessary for us to make one segment of a tire cover. We shall do it of a plane:

After that, on the top view, it is necessary for us to move a few vertexes at a plane that such detail has turned out here:


We pass to the front view and we move vertexes:


Now we select that that at us should come out:


and we do extrude faces (Edit Polygon / Extrude Face) two times (do not forget to put before this a tick in the menu Polygon / Tools Options / Keep Faces Together,   if it at you is necessary)
Further it is necessary to remove some faces which to us are not necessary


At the given stage if you wish to receive realistic model, it is necessary to edit considerably the obtained segment, to add facets, etc. If at you while not enough experience that it is possible to leave so. Because the main thing in this lesson to understand a principle
Now to us it is necessary to move a pivot point in as it is shown below



Now we can duplicate a segment using a binding to a point. Press Ctrl D and keeping key V, at moving we can precisely combine necessary vertexes:

Now it is necessary to repeat this action necessary quantity of times, all depends on that how much big you wish to make a wheel. I have made 12 segments

Now we select all segments, and we come into menu Polygon and we execute command Combine. Now it is necessary for us to turn the given design into a ring. For this purpose it is switched in mode Animation and it is chosen Deform/Create Nonlinear/Bend:

Apparently, on the screen has appeared handle which allows to specify a direction and force of a bend precisely. Rotating the handle and having specified in the panel of channels necessary value of parameters of the deformer:

Parameters Low and High Bound are responsible for length of the bending ends. Now try to set such value of parameter Curvature that the ends of our tire cover were closed. Increase on the screen a junction of the ends of a tire cover and try to enter such value that vertexes have coincided:

Then we connect vertexes of segments Edit Polygon / MergeVertex.

We delete history Edit / Delete by Tape / Hestory also we fill lateral holes Edit Polygon / Fill Hol

And using tool Edit Polygon / Extrude Face it is finished our tire cover:

Do not forget to remove internal faces and to smooth model Polygon / Smooth

The following part of a lesson is devoted more to experienced users, various technological aspects  therefore will not be mentioned. Let's produce a plastic bottle for water.

First of all it is necessary to make the most difficult part top on which the pattern is put. Created of a pattern on a plane (it should is necessary to consider that quantity of vertical edges to divide on 5 that we could connect the top part of a bottle with bottom). Do not forget to displace the bottom faces to receive a volumetric design. Is better to do such patterns by means of tool Edit Polygons / Split Polygon Tool:

Using deformer Deform/Create Nonlinear/Bend, we bend a detail under the form of a profile of a bottle:


And then precisely also we turn off a detail in a ring. We sew vertexes on a seam and the top part of a bottle is ready. We pass to bottom we make the cylinder with parameters

Parameter Subdivisions Around Axis should coincide with quantity of edges on the previous detail that all design it was possible well sew. Now we separate the fifth part from the cylinder and it is made here such detail:
We duplicate with rotation (72 degrees), we combine all details with each other and we sew vertexes. Here we also have received the bottom part of a bottle

Further all is simple, by means of Extrude Face or Extrude Edge we complete a bottle, we align two parts among themselves by means of tool Align Objects, we sew two parts together and is smoothed:

Posted in Maya 3D