Practicing and I need Some Surfacing Advice

[jasonvsc]

Ok I am a Solidworks User of over 10 years and I am trying to transition into using Fusion 360 for entrepreneural projects. I started with a few things just to learn the software. While this in not the type of work that I will typically be doing, I figured that this would help me find my way around the surfacing features in the program. So who could go wrong with Batman, right?

I started by inserting to profiles of the Christian Bale Batman and surfacing to that. 

At some point I think that I completely over complicated the one surface model and now I am stuck. Here are a few of the issues that I am having.

1. When using subdivide a few times, I have created a mesh that is almost too complex. I get the shapes that I wanted but I also had some weird anomalies that have been hard to correct. I have tried to minimalize those issues by removing lines, and even deleting faces. Nothing has really been helpful and I think it might go back to my over complication of a single part. The anomalies were usually tightly creased lines that I couldn't straight or remove.

2. Now that I am at this place I get to see just how versatile the software is. I need to fix what I have done instead of starting over. This way I can be sure that I am not going to get hours into a project and then have to start over just because of a few bad design choices. I would like suggestions on how to fix what I have done. No matter what I do "I" am unable to repair this, unless I am missing something. I cannot turn this into a solid and I would like to know some options for correcting. It tells me that faces are intersecting or something to the effect.

3. I would like to know your approach to creating this bust and what your process to create this would be. My order was this... create the overall head shape (basic roundness), add nose, add ears, make mouth cutout in surface. The mistakes I know I have made include: ~way too complex mesh around the ears, ~very weird curvature from the nose, around the cheek, and down into the neck, ~ Odd mouth cutout.

Despite how basic this may all seem, I have a long history of 3D Cad and I am very strong in other software suites....I just have to bring my Fusion skills up to par and any and all help is greatly appreciated. Thanks!!!

[jasonvsc]

I don't know if I posted this in the wrong place, or no one wants to help. I added the screencast as well now. 

[TrippyLighting]

Working with T-Splines isn't really surfacing 😉 Nevertheless, we'd need the model in order to be able to provide help. Can you share your model ?

[jasonvsc]

Absolutely. What is the difference is surfacing and tspline modeling?

I have attached the model. I have cleaned it up a little by simplifying greatly and adjusting since the original post. 

http://a360.co/2BROwqz

Now the problems are:

1. It keeps asking if I want to upgrade the t splines because some update occurred. When I would ok it, it would crash out. So I just keep cancelling that.

2. I did a repair body successfully, or so I thought. Still won't convert to a model. Says that the tsplines are invalid, but doesn't give a description.

3. Also, I don't know how to make the sculpture adjust symmetrically again. After the repair, every vertex moves alone.

Any help is greatly appreciated.

[jasonvsc]

Did that share correctly? That is my first time sharing files.

[TrippyLighting]

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@jasonvsc wrote:

Absolutely. What is the difference is surfacing and tspline modeling?

I have attached the model. I have cleaned it up a little by simplifying greatly and adjusting since the original post. 

http://a360.co/2BROwqz

Now the problems are:

1. It keeps asking if I want to upgrade the t splines because some update occurred. When I would ok it, it would crash out. So I just keep cancelling that.

2. I did a repair body successfully, or so I thought. Still won't convert to a model. Says that the tsplines are invalid, but doesn't give a description.

3. Also, I don't know how to make the sculpture adjust symmetrically again. After the repair, every vertex moves alone.

Any help is greatly appreciated.

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Surfacing deals with NURBS surfaces and trimmed NURBS patches. T-Spines are NURBS compatible but the modeling workflow is totally differnret from traditional NURBS modeling. Surfacing in Fuoisn 360 would usually be done in the Patch environment.

Your model has too my triangles which are to be avoided at all costs. There is a bug number of N-gons (polygons with more than 4 edges) in your model.

You should strive to model with quad faces only and that will take a while to get used to. 

[jasonvsc]

Okay. I'll try to fix it. 

Is there a quick way to straighten a line between two vertexes that has complicated curvature....like a line reset or something?

[TrippyLighting · Accepted solution]

No. The reason the "lines" are curved is because you are using quads (good) in conjunction with too many N-Ggons (bad) and triangles (really, really bad!).

First of all you should learn to mostly create the T-Spline in box display mode. If that loos similar enough to the final model, then that provides good indication that it will convert fine into a NURBS surface.

I spent some quality time (literally 😉 with your model and removed all the N-Gons and triangles so it should all be clean quads. The pink one is yours, the purple one is mine.

It converts fine into a NURBS (BRep) surface. Model is attached for you to study.

[jasonvsc]

Thanks so much for the help. I see exactly what you are talking about too. I was able to rework it based on your advice. I deleted tons of extra lines and then I welded vertices in order to get clean squares. The biggest problem that I had was when I would delete a line and the crease would still remain on sharply shaped edges. I ended up deleting some faces and filling the holes in order to clean those up. There was probably a better option for that, but I just don't know it. I am definitely more mindful of the mesh now. Thanks for the time and the help. I am sure I will have more questions in the near future. I am trying to hit this practice hard before the new year. I think the power I need is there....I just have to figure out how to make it all happen. And no....I won't be making Batman in my line of work ;), but the weird practice is what stretches my skill set. 

Thanks again!!!