Problem performing Lathe on circle

[Visping]

I am following a tutorial how to model an eye.

When it comes to the Lathe-tool I run into trouble as it does not behave as i expect.

It does not lathe with the end-CPs in center. It seems to lathe round the spline-center instead....

 

I have tried to alter properties, SHIFT-clicking on different CPs before lathing etc.

 

I can see three reasons:

1: I am a bit stupid not understanding the obvious...

2: The Lathe-tool is not intuitive enough

3: There is a bug in Animation Master 17.0d

 

I am hoping for the first and that someone can tell me what I am doing wrong.

 

 

This is my spline before lathe:

 

 

 

 

This is after doing lathing. Why will it not produce a perfect sphere?

 

 

 

These are my properties:

 

 

 

This is the result I expected:

[Rodney]

Make sure you are in front view.

 

It's not required but if you are in another view you'll have to tell A:M what your orientation is via one of the manipulators (Rotate, Move, etc).

Most people just use the Front view.

 

Also, you'll want to move the spline 1 cursor key over to the side to prevent pinching at the top and bottom.

 

I'll see if I can put together a quick demo for you... stand by...

 

I thought I had a tutorial handy but don't see it at the moment.

Here is a writeup on advanced lathing methodologies:

 

http://www.hash.com/forums/index.php?showtopic=9103

 

A gif tutorial of lathing a sphere from Front View is rendering right now...

[Rodney]

Here is a quick down and dirty walkthrough of Lathing a Sphere from the Front View:

 

 

Note that most people lathe with the spline on the Right side of the axis but I learned to do it on the left and it's hard to change old habits...

[robcat2075]

This is after doing lathing. Why will it not produce a perfect sphere?

 

Select only one point on the spline (not the whole spline) then press the lathe button. Selecting one pint will make A:M use the Y axis as default.

[Visping]

Now I finally found out what the problem was:

 

I pressed , (comma) to select the whole spline before lathe and the got the unexpected result.

 

If I instead just click once anywhere on the spline I can lathe with the expected result

 

 

Thank you for your reply!

 

Best regards Stefan

[Rodney]

Ah well... those things happen.

For what it's worth you can use the Comma key too.

Just use one of the manipulators to ensure the pivot is in the right location for lathing.

 

Since we are here...

For the curious here is an example of Lathing anywhere you want from the Front View.

A:M Assumes Lathing is from the Front View unless told otherwise via one of the manipulators.

I tend to use the Rotate Manipulator but you can use any of them.

 

[Gerry]

Hey Rodney, NIFTY pointer! Never knew that but I will be using it! (Also, nice demo. Is that an animated gif?)

[Rodney]

Is that an animated gif?

 

Yessir!

 

I might put a few of those together for simple things that don't require much audio/dialogue.

The gifs also have the benefit of being easily linked throughout the forum.

[Visping]

Thank you Rodney, this was very educational.

Now I understand what I am doing when lathing

 

/Stefan