topic Re: Tobacco Pipe Design in Fusion Support Forum

Tobacco Pipe Design

Anonymous — Wed, 22 Jul 2020 12:22:57 GMT

I'm having a lot of trouble trying to figure out a way to do this. I have a basic pipe design starting out:

Now, there needs to be extra curve where the shank meets the bowl. I've tried making side profile sketches at several angles and using revolve. This gets me closer, but it's weird and not a smooth curve:

Then I tried using sculpting to get it:

Is there a good way to do this?

Re: Tobacco Pipe Design

wmhazzard — Wed, 22 Jul 2020 13:20:47 GMT

Are you trying to do something like this? If not can you supply a photo of what you are trying to end up with.

My model is attached so you can see how I did it.

Re: Tobacco Pipe Design

MoshiurRashid — Wed, 22 Jul 2020 14:12:39 GMT

@Anonymous

Hello

Thanks for posting. In your model, there are two type of modeling techniques. Free form (looks caged) and Solid modeling. It is very ok to have 2 model techniques in one model . but the good practice is that, you create a closed surface with free form first then convert it to solid. Then create the solid model and apply some other features to modify it.

another thing is, you have so many intersecting portions (which looks unsmooth) in your freeform model. Switch to box mode to detect the area intersecting. Also, try removing some edges in the freeform so that you get smooth curves.

Re: Tobacco Pipe Design

g-andresen — Wed, 22 Jul 2020 14:29:47 GMT

Hi,

here´s no 2

Screencast

günther

Re: Tobacco Pipe Design

Anonymous — Wed, 22 Jul 2020 15:09:26 GMT

Thank you, but that's not quite it. The bowl is not completely symmetrical near the bottom from front to back. It sticks out more near the shank. It also sort of melds into the bottom.

Re: Tobacco Pipe Design

g-andresen — Wed, 22 Jul 2020 15:33:36 GMT

Hi,

In the screencast I only described the principle of one procedure.
Changes and optimizations, such as loft profiles in number and form and in the same context with the rails used, are of course necessary or possible.

günther

Re: Tobacco Pipe Design

TheCADWhisperer — Wed, 22 Jul 2020 16:48:45 GMT

@Anonymous wrote:
Thank you, but that's not quite it. ...

File>Export and then Attach the *.f3d file of your attempt here.

Re: Tobacco Pipe Design

Anonymous — Wed, 22 Jul 2020 17:26:21 GMT

Re: Tobacco Pipe Design

g-andresen — Wed, 22 Jul 2020 17:48:27 GMT

Hi,

If the suggested examples are not what you want to achieve, please submit images of a real object that best suits your needs.

günther

Re: Tobacco Pipe Design

Anonymous — Wed, 22 Jul 2020 17:57:13 GMT

Ok guys. This is the closest I've come. Am I on the right track here?

Re: Tobacco Pipe Design

TheCADWhisperer — Wed, 22 Jul 2020 18:17:21 GMT

@Anonymous wrote:
Am I on the right track here?

Doesn't look aesthetically pleasing to me???

I recommend starting over and turn on Capture Design History.

This can be done with 2, maybe 3 sketches.

Re: Tobacco Pipe Design

Anonymous — Wed, 22 Jul 2020 18:26:19 GMT

It doesn't look good, but I was hoping it was close enough to convey what I am trying to get. If I turn on capture design history, I won't be able to use the freeform stuff. How else can I get that extra curve there?

Re: Tobacco Pipe Design

g-andresen — Wed, 22 Jul 2020 18:30:26 GMT

Hi,

Why not respond to the suggestions by trying to understand and then apply the tools used from files and screencast.

günther

Re: Tobacco Pipe Design

TheCADWhisperer — Wed, 22 Jul 2020 19:01:09 GMT

@Anonymous wrote:
How else can I get that extra curve there?

See my quick example Attached.

I used a circle to split the interface, but I suspect an ellipse or some other shape will return a better result.

Might need some guide curves as well.

Re: Tobacco Pipe Design

Anonymous — Wed, 22 Jul 2020 19:27:18 GMT

Sorry guys, it appears I have miscommunicated. That is not the curve I am talking about. I'm talking about the curve of the bowl itself.

See that? The bottom curve of the bowl itself should be extended out to that blue line. Let me show you a bent pipe where this curve is more obvious:

You see how the side of the bowl on the right in the picture is straighter than the side on the left? That's what I am trying to figure out.

Re: Tobacco Pipe Design

Anonymous — Wed, 22 Jul 2020 19:34:48 GMT

I was sort of able to pull it off with a bent pipe, but it was tedious and still not quite perfect.

I was just hoping there was some feature(s) that I was missing that would make this easier.

Re: Tobacco Pipe Design

ryan.bales — Thu, 23 Jul 2020 16:16:00 GMT

I think for most shape a few curves and bodies and a loft with higher tangency weight and G2 Curves works well:

As @TheCADWhisperer said its only a few features long. I think you have break apart the 'straight' wall of the OD of the pipe bowl to focus on the curvature where they connect. The planes for the loft faces can be brought up or down to change the loft curvature pretty easy.

Re: Tobacco Pipe Design

ryan.bales — Thu, 23 Jul 2020 16:18:36 GMT

Same as above using your model, Splitting the body and lofting the profiles: