Creating Bulb shape front and fins on submarine 3d.

[ianhughes7UFVF]

Hi

I am in the process of creating the seaview from the original tv series Voyage to the Bottom of the Sea.

I have tried sculpting it but had no luck and found the results to be inaccurate and messy so I want to create it by using a loft system.

But I think its going to be very hard to do.

I was wondering if I could get some advice on how to create the front section.

Here is the design of the sub:

This is what the front looks like on a model of the same:

If you can help me with suggestions on how to create the front bulb shape and the front fins that would be brilliant. I am sure its possible without using sculpt.

Regards

Ian

[jeff_strater]

I would probably use T-Splines for this.  If you haven't used the Form workspace much in Fusion, it is worth spending some time learning, watching YouTube videos, etc, because it is not easy, and getting right will take some skill and practice.  I am not a T-Spline artist in any way, but I know some of the basics.  The screencast below shows a couple of techniques that might come in handy with this shape:

• use Symmetry to prevent having to be careful when selecting faces, and to maintain, well, a symmetric result
• use Bridge to create geometry between two bodies
• use Insert Edge to add topology for adding features like those fins/flanges on the front.

And, of course, you can always use more traditional BRep surface modeling to do this as well, which will require a different set of skills and techniques.

[laughingcreek · Accepted solution]

how far down the surfacing rabbit hole you want to go?  attached is a fairly simplistic approach (largely b/c I don't have a lot of knowledge about this particular object's shape).  might give you some ideas on a direction.  second time around I would probably design this thing to split along the edge of the fin.  it's hard to tell if the original was done that way. (I didn't do this model that way).-

[TrippyLighting]

Nice work!

[ianhughes7UFVF]

Hi

As much as I did try the sculpt version I am pleased to see that it can be done with lofts.

I appreciate your help and will pursue that path as it looks to be more stable in its lines than I found with sculpt.

Thank you so much.

Regards

Ian

[TrippyLighting]

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@ianhughes7UFVF wrote:

Hi

As much as I did try the sculpt version I am pleased to see that it can be done with lofts.

I appreciate your help and will pursue that path as it looks to be more stable in its lines than I found with sculpt.

Thank you so much.

Regards

Ian

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That is because your sculpting mojo isn’t up to snuff 😉

[wersy]

Some light

[ianhughes7UFVF]

Hi

This is for those that mock 🙂 🙂

I have attached my original sculpt attempt of making the sub.

The underside at the front needs to be more consistent and less bumpy and I needed a way to create a clearer join line on the side fins as per the original.

Regards

Ian

[TrippyLighting · Accepted solution]

I could be tempted to create a screencast if you can attach/embed the 1st image as a normal .jpg and not a .jfif.

[ianhughes7UFVF]

Hi

Please be tempted.

Is this what you are after:

🙂

Regards

Ian

[ianhughes7UFVF]

Hi

I have attached my latest restart of the sculpting to see if I can try that method again, but carefully.

For you interest 🙂

Regards

Ian

[ianhughes7UFVF]

Hi

I should have added this front elevation.

I didn't realize I had it:

Regards

Ian

[TrippyLighting · Accepted solution]

Don't start modeling detail, e.g. the wings, until you are completely satisfied with the main shape.

I would actually only model the main body as a T-Spline. The Wings and other appendages can be modeled easier using the other modeling tools.

[ianhughes7UFVF]

Hi

Thanks for the fusion file sample. I can see what you mean, without the front on elevation, you have made a clear job of that front end and I can see what you mean about making the body that way.

Its just that creating the curve of the side or fin of the sub at the front is something my brain wasn't getting around on how to do and still doesn't. It seems like a complex curve to create in lofts, which has scared me off.

I assume you saw the front elevation picture I posted.

I can imagine making front skectch that follows that curve and then making a body simular in thickness and then perhaps cutting the fin or stingray shape from the top, but not sure if this will work.

Your advice is always appreciated.

Regards

Ian

[ianhughes7UFVF]

Hi

The other thing that makes this complicated is the body of the prop is apparently round, and what you see running on each side are like fins or extensions to that round body.

So that front stingray fin needs to extend all the way along with these side bits on a round hall.

Sorry, I suppose I am trying to define while I went the sculpt all the way line, as these bits cause headaches.

Regards

Ian

[TrippyLighting]

If you're interested in T-Spline modeling - and with the objects you encounter you definitely should - I can recommend Arrimus 3D's YouTube channel. He has a lot of good tutorials all revolving around Sub-D and polygon modeling in 3DS Mac and Blender. The concepts directly are applicable to T-Spline modeling.