Ok Now to Add the Back of the Chair!
Here is a picture of what we are going to make:
25. Ok to get started we need to make a new Cube!
Here are the settings for the cube primitive:
26. Make the object editable and delete the bottom polygon from it. Now position the Cube
X = 90
Y = 160
Z = 0
You should now have this:
27. Now go into points mode and change the view to View 3.
Select this point shown (Make sure your in Live Selection mode and the "Only Select Visible elements box is unchecked):
And change its Z Value from
-10 to -15
Then do the same for the point above it but change it from
-10 to -20
Then the next point above from
-10 to -30
The next one above that from
-10 to -42.5
Then finaly the top point from
-10 to -70.
When this has been done do the same for the opposite side but using positive vaules of Z.
This is what the result should look like:
28. Now Select the two polygons on the sides of the back plate as shown (Be carful about using Live selection here. You can select unwanted polygons. Your best option is to change the tool to the Move Tool. To do this go into Tools=>Move.):
29. Now go into Structure=>Extrude (Or right click the mouse and select it on the pop up menu)
In the right hand bottom corner of the C4D Program a new menu will pop up. Change the
Offset value to 33 and press Enter or Apply:
Do this again but for an offset value of 30:
30. Now go into View=>View1. And also into Polygon Mode and select these two points:
31. Now go into Structure=>Weld. (Or again you can right click with the mouse and use the pop up menu).
Once you have selected these points, a yellow line will appear with a yellow box on it (If your using version 9.0 and above).
Make sure the yellow box is hovering over th point highlighted below:
Once clicked you should get this:
32. Repeat step 31 with the 3 other pairs of points.
You should now have this:
33. Go back into points mode and change the view to view3. Select these points (Making sure your using Live selection with the "Only select visible elements box unchecked):
Change thier Y Value to 75.
34. After doing this, Select the bottom polygons of the "sticky out bits" you have just created:
35. Now go into the Extrude tool (Structure=>Extrude) and extrude for the following values:
46
60
60
61
You should have this:
Still with those poygons selected (You can see them red in the above picture) Press Delete, to remove them.
36. Go into Points mode. And select these two points:

Change thier Z Value to -74.
Now select the 2 points below them and change thier Z Value to -64
Select the points below these and change thier Z Value to -67.5
Finaly select the bottom points and change thier Z Value to -75
37. Repeat Step 36 for the other side, using positive values of Z.
This is what you should have:
38. Now go into View4. And using the same technique used in Step 36 change the back plate to this shape:
And your done! You should have this:
The Poly count on my model is 147. So fairly low poly for game use.
Again, any feedback and comments will be welcomed.
I hope this has helped you... i will be adding more tutorials in time. But for now..
Enjoy,
BiggAdd.