Hi all,
I stiched many surfaces of complex piece and all of them stiched ok, without problem but the result is not a solid, it is a single surface.
Could you please tell me why it happens?
I attach a capture to see what is the result after stitching.
If you go to the Patch work space and click Stitch and select the model are there any red lines on the part, if there are you have gaps in the model you'll need to fix.
Mark
Mark Hughes
Owner, Hughes Tooling
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Can you upload the component here, right click on the component and select Export, then save as f3d.
Mark
Mark Hughes
Owner, Hughes Tooling
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Usually, this means that there is some opening somewhere. As you rotate the model around, can you see any yellow peeking through anywhere (yellow indicates the "back side" of a surface)?
Jeff Strater (Fusion development)
After stitching if you select stitch again and select the part there are these red line that need fixing up. I take a bit more of a look but I thought I show you what you need to look for.
Mark
Mark Hughes
Owner, Hughes Tooling
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There's quite a few problems and quite a bit of work to fix this model. Actually I'm a bit stuck because I get an error when I try to explode the model, perhaps @jeff_strater could take a look.
Mark.
Mark Hughes
Owner, Hughes Tooling
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OK, I'll take a look. Thanks for sharing the model!
Jeff
Update: I'm having to call in the big guns on this one. I see the same problems that @HughesTooling sees, so I sent it off to the core modeling team to look at.
@inaid, was this model originally imported from some other source? If so, would you be willing to share the original model? Perhaps the badness is in the original, perhaps it was introduced during translation.
Thanks,
Jeff
Thanks @inaid. I looked at the model. I know where the problem area is, but not quite how to fix it. It's interesting that you created this in Fusion, I'd love to know how you did it...
Anyway, your geometry problems are all in the corner of the model where @HughesTooling pointed out that the stitch fails:
You can take a closer look at these by individually un-stitiching them from the model, then turning off the rest of the body:
If you zoom in close to this area, you can get an idea of why it won't stitch. There are a lot of places where the edges just don't meet up. Fusion can handle some amount of this, but I suspect that this is too much.
I'm not sure what to tell you to do to get it to stitch. I was able to get it to succeed, but only by deleting some faces and using Patch to make a new one. But, it's not the same geometry, I don't know if that's OK or not. Here is a screencast:
And I attached the "fixed" model, FYI.
Jeff
Hi, I also studied your case, and thanks to "New Design from File" I could open your a.f3d file and studied that for a while. I noticed that the file had been changed to "Direct Model" mode and not parametric. In that case fixing individual parts on the timeline would not be possible. I also tried the following methods, illustrated by a series of screen shots based on my painful experience. Depending on what your final method of manufacture is. If you are using this file to make a mold to manufacture the metal parts, or by using CNC to mill out the parts, I would try to first form a "Main Component" then move your two parts containing the cover and the body into this Main Component. That is screen shot 1. As you can see now you have two unstitched patch bodies (without the cover). I then exported your f3d to STEP format. When I opened the stp file in Fusion using "New Design from file" you can see the two unstitched patch bodies had become one unclosed surface body in stead of two unstitched patch bodies. In most of the cases, this STP file could be used to make a solid body by your intended method of manufacture. You will have to polish the manufactured parts and might have to smooth out those particular sections of the body more. But I do think you can manufacture that part using this STP file. Of course you can try to use other programs other than Fusion to edit this particular section but to maintain your present geometry I suggest you to use this STP file to manufacture the parts. Screen shots:
1. The original a.f3d. A Main Component was created, and your two sub components moved into this main component
Two unstitched patch surfaces were present.
2: Exported to STP file and opened in Fusion again, the two unstitched bodies changed into one unclosed surface. But still a solid. A surface has no thickness but for the sack of manufacturing it is fine. Could be acceptable
Viewing the STP file using 3rd party CAD viewer, a solid body could be visualized:
Without the cover:
Maybe you should try this method. Lots of time for big complex files using a lot of patch surfaces, if some sections could not stitched it might be hard to edit. Changing into STP format could be a good way to just "Make the part and forget it". Anyway, to make a mold it is a good idea to export to STP format and transmit to other companies for making the parts. They should be able to read the exported STP files.
Hope it helps you a little.
Best of luck!
Hi, to further my suggestion of exporting into a stp file. I saved that stp file into a2.f3d. Opened the a2.f3d and as you can see, the unstitched surface patches changed into one unclosed surface body. A screen shot with cross section analysis is attached here. As you can see you can either fix it now or just leave it and get the parts manufactured:
