Dears,
I am the ultra novice....bear with me.
Did not have time to work with MOI lately, so I am now....
I am trying to create a hollow cilinder with tapered, from one point one, internal walls.
see my model.
I select the whole and then I hit "extrude", but it gives me two cilinder, (and even if I delete one, the internal walls are not tapered ).....this is not what I want....
Am I doing something wrong? (I mean...for sure....but where?)
Do I have to take another approach?

Any good soul?
(Michael, you are busy...do not bother)

Best,
Rudy

Hi,

you could do a simple Revolve. Look at the picture. I took the side shape and revolved around the z axis.





MfG
sk2k

Sk2k,
Thank you.

I know that there are X,Y, and Z.

What is the A axis?

I tried...but cannot figure it out.
Thank you for wasting your time with me,
Rudy

Fixed. I meant the Z axis.

MfG
sk2k

A couple of steps for doing the revolve: See that curve that Tony highlighted in yellow above? Get rid of everything else except for that curve (select all the other objects and then use delete).

Now to create a revolved surface from that curve. To do that select the curve and then run the Construct / Revolve command.

Now MoI will ask you to pick 2 points in sequence to define the revolve axis. In this case you want to pick the 2 points to form a vertical line in the Front view, this means that your revolve axis will be going in the world z axis direction. This will create the surface that Tony showed above.

Revolve is generally your best tool for making cylindrical type shapes.

Let me know if you need some more detailed steps.

- Michael

Got it!

Thank you much.

Both.

Hi Rudy,

You can even do this type of thing as a Sweep.

regards Colin

Hej Colin,
thank you.

I just took Michael suggestion and have a profile done, than with revolve I just pick a center (radius), giving any height (Z), and voila.

Rudy