Special modification

[Anonymous]

I am hoping for some help completing a very simple droplet structure. I have the basic structure completed of a cylinder merged with half a sphere, however, I cannot seem to modify the cylinder correctly so that it converges at the topmost part. I would appreciate any and all help.

[jeff_strater]

you cannot modify the cylinder to turn it into a cone.  If you want to model a drop-like shape, I'd use Loft, selecting a point as one of the profiles.  Screencast coming shortly.

[jeff_strater]

See the screencast below.  This is one way to do it, I'm sure there are others.  Hope it is clear enough to follow.

[Anonymous]

That is excellent! I really appreciate your help. I still have a couple questions though. I thought that from this shape I'd have a better idea of how to accomplish my exact shape, although I am still running into problems. So my upper layer has to also be a circle and not a point, but when I try to extend it as far as I need to, then the shape starts to converge. Look at a picture of my actual desired shape, thank you so much for your help.

[wersy]

I would make it by revolve a shape.

This way you have absolutely control of the curve  shape.

[wersy · Accepted solution]

You can even make it with just one spline importing the picture and use it as a template.

[jeff_strater]

@Ces5ct, that effect is actually caused by the tangent weight applied to the first profile (where it connects to the sphere).  It causes a kind of "momentum" in the surface that carries along the entire loft.  You can see this if you play with the tangent weight.  See below.

So, one approach is to use that control.  There are others, such as adding extra profiles in the shape, but too many profiles can cause ripples to appear.  You can use "guide curves" to control the shape as well.  These are curves along the length of the loft, where you can specify the actual shape that you want the loft to take.  Those can be painful to set up, but very powerful.

But, really, @wersy's answer is far superior to mine.  This shape is, indeed, a rotated one, and Revolve is a much better tool to use to create it than Loft.  Then, you have complete control over what the result looks like, because you can sketch it yourself.

[Anonymous]

Thank you so much @wersy this looks excellent. I just don't know how to import the image or draw the contour line. Would you be able to videocast your screen?

[Anonymous]

Nevermind! I was able to upload the file, thanks so much.

[wersy]

Inserting an image is very easy, as you can see in the screencast.
- Insert -> Attached Canvas
- Choose plane
At first opacity was at zero, so it was not visible.
With this slider you can set the opacity.
Then you can scale the image to the desired size.

Screencast:      https://autode.sk/2mhlWIo