Struggling mesh to solid

[RScott9399]

I have a very detailed and complicated mesh of car body. Fusion will not make it a solid. 

All I get is endless "cant compute errors"

I am trying to make a simplified mesh. All I am really after is the outside shell so I can 3d print it or slice it up and mill it on a CNC.

It seems the only change in hell I have of getting fusion to cooperate is to drastically cut all the detail of the model out. It has a full interior of the vehicle as well. So what im trying to do is figure out an easy way to delete all the parts I don't need. I have tried to do a manual edit but good luck. I will be here for 3 centuries deleting triangles. 

Fusion has created face groups which look to coincide with the major body panels which is mainly what im after. 

Does anyone know of a way I can somehow select only the outer face groups and delete everything else in the hopes it will make me a solid?

Thanks

[RScott9399]

So the saga continues. 

I have been trying to use the mesh sketch feature. for whatever insane reason fusion will not let me on the center of my car. So if I select a plane, say the x plane to make my sketches on ok great, between x = +- 8 inches the little orange line that makes up the sketch will not show. When I get to like +9 and to the end of the car body it works fine. Like wise for the end direction. WHAT THE HELL FUSION!!! I don't get this tool I really don't. This is why solid works has cornered the market

What logical reason could it be that the little orange line just doesn't appear in when close to the origin!

Anyone have any suggestions. 

[TheCADWhisperer]

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@RScott9399 wrote:

I have been trying to use the mesh sketch feature.

 This is why solid works has cornered the market.

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How would you do it in SOLIDWORKS?

[TrippyLighting]

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@TheCADWhisperer wrote:

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@RScott9399 wrote:

I have been trying to use the mesh sketch feature.

 This is why solid works has cornered the market.

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How would you do it in SOLIDWORKS?

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I was wondering the same thing!

If the end result is a 3D print, and the input is a mesh already, I would not even use Fusion 360 for this. A mesh modeler like Blender offers a toolset that is much more suitable for this work.

But that is also just a guess based on other designs I've seen and worked on. We've not even seen a proper screenshot of the whole object.