Struggling with closing the surface of a parametric 3D sketch wireframe

[f.with]

Hey folks, 

I'm working on a parametric design of the human upper body, whose dimensions can be adjusted for individual measurements. My goal is to later model garment on the surface of this body.

However, I'm struggling with transforming my 3D sketch "wireframe" to a surface body.

I started to model this wireframe without thinking much about how to make it a surface later on. I thought I could just insert patches with those 3D curves as boundaries.

Using Loft I managed to close most of the surfaces smoothly, but I can't get it to work for the shoulder-arm piece and the neck part.

Also the other tools in the patch workspace didn't work for me. 

Do you have any recommendations how to go about this problem? Or a better strategy for designing the 3D sketch wireframe, so that making the surface becomes easier?

Any help is appreciated! 

[g-andresen]

Hi Fynn,

1. Take a look at this thread  especially some contributions from @beresfordromeo .

2. Maybe sculpting is also a topic for you.

regards

günther

[laughingcreek]

The type of lofting/surface modeling you are attempting is very advanced. The pit falls are many. As an exercise to hone your skill and learn, it is a worthy goal. But for your stated reason of having a mannequin for further garment work, I think there are better options that would be more productive. Google "Make Human." This free program will produce a quad mesh tailored to any (human) body type you can imagine (literally). The output is a quad mesh that can be imported into fusion and converted to t-splines. I've done this to model real people based on their measurements, and design things around them. http://www.makehumancommunity.org/

[beresfordromeo]

hi @f.with 

If you could share or attach your model, perhaps I or others would be better able to help you get to the bottom of this problem.

[f.with]

Thanks laughingcreek. I actually tried the MakeHuman attempt before that! I think it could work out. What I'm missing, though, is the parametricity. Using the skulpting workspace to drape fabric around the mannequin, I would have to change my surface by hand each time the dimensions of the mannequin change, right? My goal is to have everything parametric and adaptable to changes in the individual measurements. In general: Is it at all possible to do such parametric surface modelling in Fusion 360? Would I be better off working with a different software like Inventor or Rhino?

[f.with]

Of course: https://a360.co/2Kdxprt Thanks for your help!

[f.with]

Thanks günther, I also discovered this thread. I still have to get involved with the technique of using intersection curves. Regarding the sculpting workspace: There is no parametric modelling possible, is that true? In most cases people just seem to design their stuff around bodies or canvases.

[beresfordromeo]

I can't see any geometry in your model. It could be something to do with the way you have shared it but i don't know much about that.

[f.with]

Sorry, I forgot to share the failed lofting attempt, so the model included only 3D sketch splines. The website that I linked apparently doesn't show those, only surfaces and bodies. I've updated the model so you can see the lofting, too.

[beresfordromeo]

I am no expert in this field as I don't share models very often but all I get is surface bodies. Apologies if I am making a mistake here.

[beresfordromeo]

My apologies it worked fine when I downloaded the file.

[beresfordromeo · Accepted solution]

I assume that this is what you are trying to do. If so you cannot loft between those two sketches (Armhole and Biceps Plane), because they are coincident at one point. Nor too can you loft between the surface body, Body 17 and that sketch (Armhole)for the same reason.There are probably a number of ways to get around this but an easy one would be to create a Construction > Plane Along a path and use that plane (Plane36 in the attached image) to Modify > Split Body, Body17 , ie the surface body that is formed by the  loft between the Biceps Plane sketch and the Wrist Plane sketch.

This will create a new body (Body18) which you will need to delete or hide. Then loft from Body17 to the sketch called Armhole. You can obviously use a tangency from Body17  for your loft.

Hope this makes sense, thanks for sharing your model.

[f.with]

Thank you so much, it worked! I now start to understand how to work with the loft tool!

[beresfordromeo]

You are most welcome.