Sweep using 3D Sketches fails on saving

[CJ.10E-10mm]

I am endeavouring to create a sweep profile that enables the creation of a 3D model that I can subsequently slice and 3D print without overhangs. My part is too small to allow the slicing software to add supports.
The sweep option readily creates a model that looks useable but repeatedly fails when I try to save it.
I have checked every aspect of my part creation.
Using a rail as a guide, a 360-degree profile rather than the complete loop is generated that can be saved. If I use the surface on which my 3D sketch is created as the guide, it produces the part I require as per the image but fails upon saving
Does anyone have experience using 3D sketches that can offer advice?
The part is commercially sensitive.
Thank you.

[CJ.10E-10mm]

I have managed to overcome the problem by chopping the 3D Sketch up into 360-degree loops. It is not ideal, but I must assume from the lack of replies I am venturing into an are unfamiliar to many.

[blandb]

Can you share your file?

[johnsonshiue]

Hi! The behavior sounds wrong to me. It could be geometry specific. Please share the ipt file here. I would like to understand it better.

Many thanks!

[CJ.10E-10mm]

As the design is extremely commercially sensitive I have recreated a similar situation in a small file.
The sweep path, the guides and the sketch are all fixed.
The problem I have is the cross-section of the profile reverses as it travels 180 degrees.
I have had to split the sweep path allowing the upper and lower sections to overlap. As I have multiple sweep paths it has become somewhat complicated.
Thank you for your kind attention.

[johnsonshiue]

Hi! Many thanks for sharing the part! How do I reproduce the Not Saving issue?

Thanks again!

[CJ.10E-10mm]

*Good morning,*

I am unclear what it is, that you would like to know.

Are you asking how I created my model using the Sweep option with a Guide?

I will be willing to assist you once I have a clear understanding.

You will appreciate my design is quite complex and very commercially
sensitive, aside from the numerous attempts on my life.

I started work on the original design over six years ago.

My current design exceeds all of my expectations.

Christopher

[johnsonshiue]

Hi Christopher,

I am sorry I don't think I understand the error here. You said "3D Sketches fail on saving." Does it mean you get an error message when saving the file? I am not seeing that error. This is why I am asking how I can see the error.

Many thanks!

[CJ.10E-10mm]

Good morning.
When I performed a Sweep and pressed OK, it would fail to save.
I could see the effects of the swept profile, but it would collapse when pressing OK to save.
I rebuilt a new file and the error disappeared. Then Sweep functions worked beautifully without Inventor crashing.
I can only think I had corruption in my files.
If anyone reports the same error, I would suggest they rebuild their file from scratch.
I hope this helps to clarify the situation for you.
Christopher