Stuck with T-Slpine Errors

[Anonymous]

In my engineering class we used Solidworks and I really liked it so I went home and got this. This is my second time making anything so please help. The first one was tutorial. I'm trying to make a wheel with 8 spokes, but they all have a T-Spline error, some are surface and some are line intersection. I tried the repair body, convert, and a couple other things I read from Google, but nothing is working. What else will work?

[innovatenate]

Could share a screen shot or a public link of the design with us?

You may also use the export command and export an archive (F3D) to upload to this thread.

Without a visual or the wording of the error message, it is difficult to say what the issue is.

I'm guessing that when you select Finish Form, you get an error: 

"T-spline model failed to convert. If you continue the model will not display in the parametric workspace. You can return to the Sculpt workspace to fix the errors preventing conversion.Select he button to the right of the T-Spline body in the browser to see the errors displayed."

This is most likely because the T-Spline body is "folding in on itself," or is self intersecting. See the below demo video where I twist a T-Spline body on itself. You'll note that it is unable to covert into a solid body when I select Finish Form. Conversely, if I untwist the t-spline body, it converts without an issue.

Self-intersecting T-Spline Body:

http://autode.sk/1BnCmCr

It may help to review the T-Spline body in the different display modes. It can be easier to clean up a T-Spline body in Box mode. See the below video for further reference.

https://screencast.autodesk.com/Main/Details/e050f582-782c-40cb-8812-73a9c8d08991

I hope that helps. Let me know if you have any questions.

Thanks,

[Anonymous]

Here's the link: http://a360.co/1EqpetV 

That is the error message I get. I looked at the video, and in it the object is visibly overlapped, but mine looks perfectly fine. The highlighted lines with the error are the center ones going through the cones.

[innovatenate]

Thanks for the file. That definately helped!

The t-spline body is self-intersecting. Check out the below video for a solution to the error.

To resolve the issue quickly, I deleted the self-intersecting faced. Next, I used the fill hole command (reduced star). After this Fusion 360 is able to convert the t-spline body into a solid quite easily. The error messages in the video are for all ot the other T-spline bodies.

You can download the file from the below link.

http://a360.co/180HXm6

I hope that helps! Let me know if you have any questions.

Thanks,

[Anonymous]

I am having a huge problem with self-intersecting edges and if I have to go through and manually move each little line it's going to take 1000 years. I used the "pull" function to put a t-spline over a mesh and got self-intersecting edges on every single edge. The second video you posted seems to be muted and won't let me unmute. Other videos play fine but that one and this one that I thought would be helpful https://screencast.autodesk.com/main/details/8d86a83e-d517-4e13-a3b7-c5d00e514017# is also muted and won't let me unmute. Is there a function or easy way to clear up all the self-intersection edges in fewer clicks that it would take to manually move them all? Also, is there a way to prevent this from happening again when using the "pull" command? This is the project I'm working on: http://a360.co/1HUaUvV Such a simple thing causing such a huge headache for me! 

[deyop]

I am sorry you are having diffiuctly with the pull results.  The fault lies with the simplicity (stupidity) of what the pull command does.  For every selected vertex a minimum distance is found between the vertex and the target object.  The vertex is then moved to that location.  We don't have a method yet that will recognize when a self-intersection is occuring and then modify the result.  You will see a highlight when converting where the intersections are occuring.  This works because we are analyzing a "snapshot" of when the conversion is done doing it dynamically would be more of performance challenge.  

Because of these limitations the pull command will work better when the T-Spline body is relatively close to the target and the shape is relatively smooth.  In the example you show the target looks to be quite prismatic with sharp edges.  This would be a difficult application for pull. 

If you can give us a link to the target object we can try to find some alternatives for the shape development.

Thanks