Error: inconsistent information in vertex and coedge attributes

[srgntballistic]

Hello,
I'm having quite a bit of trouble remixing an STL. I'm trying to modify the file to add some assembly registration, snap fittings and magnet inserts.

I have done the following up to this point:
1. Import STL and insert into design

2. Stop capturing history

3. Converted the Mesh to BREP

4. Started capturing history

5. Scaled the body to the desired size

6. Performed a split body on an arbitrary offset plane. I've found this gets rid of a lot of the unnecessary faces/vertices on converted solids

7. Recombined the split bodies

8. Created a sketch on a face of the resulting

9. Tried to use the sketches to extrude and cut the new body.

This results in the following error

Error: inconsistent information in vertex and coedge attributes

I've done this method with other more simple models and it has worked. I've also tried using the converted solid body as a cutting tool that intersects with another body.

Any help would be appreciated.

[srgntballistic]

Is there anything I can do to help show/describe my issue better?

[paul.clauss]

Hi @srgntballistic

Thanks for posting! Sometimes this issue occurs when an edge of the converted mesh body is coincident (or very close to coincident) with the edge of the cutting profile (or the solid body used in the combine > cut). The first troubleshooting method I would try would be to offsize the hole slightly - will the cut succeed then? 

I'm happy to have a look at your file if you'd like to share it with me - you can do so using any of these methods. If you'd like to keep the file private, feel free to direct message me a downloadable link.

[srgntballistic]

Sorry I thought that I had uploaded the f3d file as a an attachment but I don't see it now.

I'll try sharing it tonight. Thanks!

---

@paul.clauss wrote:

Hi @srgntballistic

Thanks for posting! Sometimes this issue occurs when an edge of the converted mesh body is coincident (or very close to coincident) with the edge of the cutting profile (or the solid body used in the combine > cut). The first troubleshooting method I would try would be to offsize the hole slightly - will the cut succeed then? 

I'm happy to have a look at your file if you'd like to share it with me - you can do so using any of these methods. If you'd like to keep the file private, feel free to direct message me a downloadable link.

---

[paul.clauss · Accepted solution]

Hi @srgntballistic

Thanks for sending the file over! I believe the mesh to brep conversion in this file gave some bad results, as I found some odd behavior on my end when working with your file. I did find a workaround for this behavior, which I have shown in the screencast linked here. 

It seems that exporting a STEP file was a good way to illustrate the problems (that were not clearly visible) - exporting the STEP file of the entire body only gives half of the body. This is very strange, but it allowed me to then copy, align, combine, and cut the part as desired. I copy/pasted and eyed out the position of your original sketch for the holes, but you could also recreate it/

Hopefully this helps! Please let me know if you have any questions.

[srgntballistic]

Thank you so much Paul! I learned quite a bit from that screen cast. A that screen cast is a thing haha. B that saving out a STEP file might be a good idea when I run into tough meshes like this. C just some of the ways you move around the interface and access things. Very Very helpful.

I'm a 3D Printing enthusiast and I make content for YouTube. I downloaded the stls and filmed the process of printing, sanding, painting and adding electronics. I wanted to try and improve it but unfortunately the OP on Thingiverse didn't have access to the original model. I've actually been trying to get a workable solid out of this since around July.

Hopefully I'll now be able to add recesses for magnets, registration/alighment and mounts for some of the electronics I've added a lot easier. I had to drill into the plastic before which is less than optimal

Thanks again!
Brian

[paul.clauss]

Hi @srgntballistic

Thanks for the response - looks like a very cool project! Great finish on the 3D printed parts!

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