SVG Import Creating Broken Edges & Offset Failures

[ekaj_999]

Hi all,

I’m having an issue with an SVG logo I imported into Fusion 360 and I’m hoping someone can point me in the right direction.

The SVG contains text, and after importing it into a sketch, I’ve noticed that the letter outlines are broken up into multiple small line segments rather than being single continuous curves. This seems to be causing problems later in the workflow.

 

 

What I’m Trying To Do

• Extrude the letters separately as new bodies

• Create recesses in another body (so I can 3D print the letters separately in different colours and slot them in)

• Offset the faces slightly to account for print tolerance (0.05mm on the outer edge of the extruded text and 0.05mm on the outer edge of the recess)

The Problem

Because the SVG outlines are made up of lots of tiny segments:

• The extruded letters end up with multiple faces along what should be a single edge

• When I try to use Offset Faces to apply tolerance, Fusion fails to compute

• The error mentions failing to heal the model after deleting faces

I suspect the root cause is the fragmented geometry from the imported SVG.

What I’ve Observed

• Some letters appear to be made up of many small straight segments instead of smooth curves

• The recess ends up with multiple faces per edge

• Offset operations fail during recompute

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Any advice would be hugely appreciated please.

[kacper.suchomski]

Hi

Please select face and click Delete.

[TheCADWhisperer]

@ekaj_999 

You only have a few letters to do.

I would use the import only as reference in tracing a new high-quality sketch.

[ekaj_999]

Thanks so much for the tip! 

I've started tracing over the original .svg text and it's looking promising already.. however I'm struggling to trace over the C, D and S letters - do you have any advice?

 

[jhackney1972]

You would do a lot better job using the Mesh Section Sketch Method.  It is time consuming but it will eliminate all of the letter faces sections.  Your tracing method will not do this.  I will so the "Switch" word on your model and let you decide.

[jhackney1972]

I have attached your model with the word "Sketch" created using the Mesh Section Sketch method.  Turn off the sketch and look closely at the sides of the letters.  All of the segments are gone.  You can use the same process on the other letters and symbols.  Let me know if you want to see the process.

[ekaj_999]

Thank you so much John for taking the time to preview this. I would love to see the process please if it's not too much trouble.

I actually have quite a few of these .svg logos (and text) to incorporate into models, so I'd love to get familiar with this method before moving forward.

[TheCADWhisperer]

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@ekaj_999 wrote:

Thanks so much for the tip! 

... however I'm struggling to trace over the C, D and S letters - do you have any advice? 

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@ekaj_999 

Can you Attach your trace attempt here?

An artist had to create this, you should be able to recreate.

Consider that the conversions have done approximated geometry.

Don't take it literal.  Make the replacement aesthetically pleasing following the original as much as practical and possible.

[jhackney1972]

Attached is a short video explaining the process.  I did not take a lot of time selecting my line types and points, if I did I could have avoided the two edge lines on the "S" and the "W".

[ekaj_999]

Firstly, thank you so much for the very clear and well explained video John, it was really easy to follow and understand.

I've had a go at tracing the letters using this method and attached my project file. For the most part, I think it was mostly successful, I just have a couple of queries going forward:

• Some of my mesh sections did not seem to be complete when extruding, even though the sketch profiles were closed, and I wasn't able to work on them using fit curves - why could this be and how can I fix it?

 

• Also, sorry this might be a stupid question but presumably I shouldn't use the spline line tool in fit curves? It seems too easy but was sometimes the only way I could navigate some  edges accurately without using many little lines and arcs and getting this result when extruding:

• Lastly I just wanted to confirm, once I've finished a complete sketch of the logo/text, am I able to export a clean new .svg that I can use in my projects in the future? If so, how do I go about combining all of these sketch profiles into one sketch to run the export .svg operation?

[jhackney1972]

In reference to your first bullet point.  This is probably because you missed a part of my video.  Starting at time marker 0.49 seconds, I select the surface of your model to achieve the correct angle for my surface plane but you missed the second step of offsetting the place to get it off of the surface.  I believe this is contributing to your issue.

In reference to your second bullet point.  You have to determine the best tools to use to match your mesh section sketch.  Your original sketch is not very good so it will take you time to figure out the best tools to use.  Remember the fewer points you select the better.

In reference to your last bullet point.  I have a few ways of exporting the resulting individual sketches but each of them introduces the original problems back into the sketch, so I am at a lost to give you a suggestion.

[jhackney1972 · Accepted solution]

After I posted my answer to your third bullet, I thought of a way to capture your logo and text that has been successfully modified and extruded into a component that you can use over and over on other projects.  The method outlined in the video will avoid any copy sketch issues.  Take a look at the video process and if you need further help, let me know.

If this answers your question, please select the "Accept Solution" on my post. If you need further help, please ask.

[ekaj_999]

This was incredibly helpful and super well explained as always, thank you so much John!!