First thing to do is make all the lines that distinct main lines on surfaces you are to model. I start off by drawing a horizontal line with three points, the middle one placed on the vertical axis with snap=on using the front view.
The important thing to keep in mind when drawing lines is to get the best detail using the less possible points – in this case three points are more than enough. I then click on control points on, and put the points a bit higher so that the line is exactly on the phone’s border.
I continue with the vertical line, for which I use four points this time, and move the two in-between points together so they match the side border.
This vertical line I mirror to the other side using the osnap mid and using the middle point of the top edge I did before as a start point of the mirror axis.
Since mirroring the side lines using the midpoint of the top edge actually match the blueprint’s sides is a good verification that my blueprints are of high quality. Next, I do a four-point line for the bottom edge – reason I used four points and not three is that I need more detail in the curve, which seems to have a small ‘straight’ part in the middle. As you see I have not connected the lines to each other, I just reached them to the points where the curved edges start.
I am goint to fill those gaps using the fillet curve tool and give it such a value so that horizontal and vertical edges match exactly following the blueprint’s curvature. I used different values in the top and bottom edge.
In this tutorial I will not comment on any specific values but only techniques, it’s best to learn values on your own. After I am done with all edges and fillets I select all the lines and join them to get the outer border of the device.
Consulting the front side blueprint I select this outer border and use the offset curve inwards until it gets to the inner border of the device.
Since offset curve in such high values destroy my filleted edges, I do the fillets again by selecting the vertical and horizontal edges and giving them the same value as I did with the outer border, so that they have the same curvature.
Now using the right view I put the outer line where I need it in the side picture of the cellphone. I duplicate it and put the second line at the second point where I need it in order to loft later between the two.
After carefully examining both sides of the cellphone we see that the ‘inner’ line (offset line) I made is slightly different to the rear side of the phone (rear side is a bit higher at the top and a bit lower at the bottom compared to the front one). What I did is duplicate the front line, and changed it consulting the side blueprint to look like the picture – top edge slightly higher than the front part of the phone and bottom edge a lot higher than the front’s. The reason I did this, you will see in a few steps.
Let’s start making some surfaces now! Using the loft tool, we create a surface between the two main lines. I used the osnap mid to start the loft surface from the middle of the top part of both lines in order to get a fully symmetrical surface. I use the patch tool to create the front surface of the phone.
Now I use the blend surface and select top edge of the side surface and the edge of my front surface.
Again using the osnap mid I put the start of the blending surface in the top middle part of the edges. Immediately afterwards and after consulting the side blueprint I play with the blend budge settings and end up getting the following surface. Since our blueprints are not that accurate for this resolution of the model we can’t expect it to match 100%. That would only happen with cad blueprints, which we are highly unlikely to come across.
Now for the rear side. Again using the patch tool we create the rear *temporary* surface and blend between the two. Now the blend bulge settings are a bit different that we previously used for the first surface and that’s because the rear side blend surface is slightly different that the front. The resulting surface we get is something like the following one that doesn’t match at all the side blueprint, but I am happy with it – explanations come soon. We join the rear side blend surface with the rear patch surface.
Resulting surfaces look like this so far. Comparing to the actual device they seem quite nice so I accept them.
Now using the right view we draw a line that looks like this one.
I used the ortho snap in order to make the vertical line, then I drew a second line with an angle and filleted curves between the two. Now using the right view I select this new line and I use the extrude curve tool, press ‘b‘ in order to extrude it both ways and click somewhere far outer than the width of the phone using the top view like shown.
Now I join all surfaces in order to be able to use the boolean difference tool. Then I select the joined polysurface, click the boolean difference tool and then select the newly made surface out of the vertical curved line… and we are almost done with the most difficult part of the modeling of this cell phone. Now, if you notice the bottom part of the phone the given surface quite matches the blueprints; this you will be able to forsee after gaining enough experience in 3d modeling.