BUG in 2D trace (new?)

[fritter63]

Video shows it all. All of a sudden after the update(s) 2D trace doesn't seem to be working for me:

[LibertyMachine]

Hmm. I'm seeing that too, if I use the Project to Surface option. However, I think I may have a workflow that will get you what you need, if you are doing straight lines.....: Sketch, extrude it out. Project a plane above the part (arched area) Draw a line on it. Create plane at 90 degrees to arched face. Use that to slice the face, creating a line across the part. CAM, make the setup and proceed as normal. No issues that way. However, if you have actual contours, I'm not sure what that work-around would be.

I think you should file a bug report. You already have the screencast made, so it's a quick enough email to send out.

[fritter63]

Any update on fixing this issue?

[LibertyMachine]

Did you submit a bug report, and if so, did they give you a case number?

[fritter63]

yes.

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@Anonymous wrote:

Did you submit a bug report, and if so, did they give you a case number?

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[Mike.Grau]

Hi @LibertyMachine,

Thank you for sharing this screencast with us.

I did a couple test and this gave me a hint what could have caused what we have seen in the screencast.

It might depend in the way how your construction line has been projected to the surface.

Could you may test the following:

1. MODEL: Could you scroll back in your time line right after you have created the sketch

2. MODEL: Redefine the origin plane of the sketch and select the origin X-Y plane that the origin sketch is beneath the conic surface

3. MODEL: Re-project the sketch to the surface

4. CAM: Edit the Trace and re-select the "Curve Selection"

5. CAM: Start the simulation with the same settings 

It would be great if you could share your file with us.

You can send me a private message to mike.grau@autodesk.com 

Please, keep us updated if this helped.

Thanks,

[fritter63]

@Mike.Grau

no, that did not help. Model file attached.

Could you may test the following:

1. MODEL: Could you scroll back in your time line right after you have created the sketch

2. MODEL: Redefine the origin plane of the sketch and select the origin X-Y plane that the origin sketch is beneath the conic surface

3. MODEL: Re-project the sketch to the surface

4. CAM: Edit the Trace and re-select the "Curve Selection"

5. CAM: Start the simulation with the same settings 

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[HughesTooling · Accepted solution]

@fritter63 Here's a workaround, see screencast. For some reason the curve is selected as a closed curve, don't know why I  drew another arc and had the same problem. You need to unselect the curve in the op then reselect and click on the blue path and change to open curve.

Mark

[fritter63]

@HughesTooling

Mark to the rescue (as usual)!

That did it, thx.

This is still a bug I think?

[HughesTooling]

Yes I'd say it's a bug, how can a single arc segment be closed. I redrew just in case it was a problem with projecting and still got the same problem. File attached with second arc. What made me suspicious was you can select the curved edge of the body and it machines the full edge.

Mark

[Anonymous]

@HughesTooling @fritter63

I too use the trace tool quite a bit for clearing cavities where a regular form cutter will not go. I too noticed this bug. However, selecting the curve using "ALT" pressed will not give you a closed curve and all should work well. If you don't do that, even changing the path direction by clicking the arrow does not work.

Hope this helps.

Naresh

[Mike.Grau]

Hi @fritter63,

Thank you again for sharing your design. This was really helpful

And thank you to @HughesTooling for sharing the work around with us.

I have shared this information with the Fusion 360 CAM team and they will work on this issue.

Thanks,