topic Re: creating a cylindrical cone in Fusion Design, Validate & Document Forum

creating a cylindrical cone

sjoerdw — Fri, 10 Nov 2017 13:37:25 GMT

I'm rather new to Fusion 360, so maybe my question is because of that ;-). I'm trying to create a cylindrical cone to connect to cylindrical shapes (which have the same wall thickness but have of different diameter), so this cone shape functions as a transition between those two cylindrical shapes. I tried the "loft" option and the "extrude with taper degree" option, but these did not gave me the right solution. The cone should have the same wall thickness a the two other shapes. I have attached a png file and hopefully it shows what I want to accomplish. Can someone help me out? Thanks in advance!

Sjoerd W. Bijleveld

Re: creating a cylindrical cone

Ezekiel12 — Fri, 10 Nov 2017 13:53:28 GMT

I tried to create what you described. I attached the F3D file so you can go through the timeline.

Re: creating a cylindrical cone

laughingcreek — Fri, 10 Nov 2017 14:50:55 GMT

I'd be inclined to do it with a revolve, fewer steps, and a little easier to control with dimensions.

Re: creating a cylindrical cone

sjoerdw — Fri, 10 Nov 2017 14:57:42 GMT

Hi Ezekiel,

Thank you so much for your quick reply! It is exactly what I want to accomplish. I had already discovered that the "loft" command creates the right cone shape, but when I apply the "shell" command and use a thickness of 1.9 mm (which is the wall thickness of the cylindrical shapes) the result is quite weird, it just shortens the cone shape! See attached files.

Kind regards,

Sjoerd W. Bijleveld

Re: creating a cylindrical cone

Ezekiel12 — Fri, 10 Nov 2017 15:01:31 GMT

Wow... what the... Which face do you select with the Shell tool? You should select faces that you want to delete... not the one that you want to thicken.

Re: creating a cylindrical cone

sjoerdw — Fri, 10 Nov 2017 15:07:55 GMT

Thank you for your reply. Indeed this seems easier, but for me as a beginner, to create this revolve shape in 3D is still hard. But I will certainly dive into it and for sure read (again) the tutorials for beginners.

Cheers,

Sjoerd W.

Re: creating a cylindrical cone

jasonhomrighaus — Fri, 10 Nov 2017 15:24:26 GMT

Here try this

Re: creating a cylindrical cone

sjoerdw — Fri, 10 Nov 2017 15:31:20 GMT

Hoorah, mission accomplished! My mistake was indeed I selected the face (or body) I wanted to thicken, but Instead one needs to select the two opposite faces which close off the cone. (First I only selected one face, which did not give the right result.) So thank you again for your quick and accurate reply! When I'm more experienced I think sketching shapes to revolve is a better (and maybe more intuitive) approach.

Cheers,

Sjoerd W.

Re: creating a cylindrical cone

sjoerdw — Fri, 10 Nov 2017 15:38:35 GMT

@jasonhomrighaus,

Thank you for your quick and instructive video! By looking at it, it seems very easy, but for beginners some of the actions needed are simply still difficult to apply. But just because of the answers of this forum I have already learned a lot!

Re: creating a cylindrical cone

etfrench — Sat, 11 Nov 2017 09:56:39 GMT

You may find the Revolve operation is simpler to use and also to control parametrically:

p.s. Ignore the inadvertent 'F1' keystroke

Re: creating a cylindrical cone

sjoerdw — Sat, 11 Nov 2017 10:29:40 GMT

@etfrench,

Thank you for this very instructive mini tutorial ;-)! Somebody else also did advice to use the revolve command. It seems the prevailing method and indeed to most flexible! Besides solving my problem your video also shows good ways to use Fusion 360.

All the best,

Sjoerd W.

Re: creating a cylindrical cone

jasonhomrighaus — Sat, 11 Nov 2017 21:25:06 GMT

Where lofts become extremely useful is in connecting different shapes or different orientations.

Another technique that I have just started playing with is to use sweeps but to apply them in a way like a revolve but for non round objects. Such as egg shapes or ovals.

Re: creating a cylindrical cone

kkkwj — Sun, 16 Dec 2018 22:56:32 GMT

Thank you! Your video showed me exactly what to do!