Tapered Engraving Contour Not Correctly Generating Toolpath

[Anonymous]

Hello,

I have a closed shape that I'm trying to define for engraving. The engraving correctly generates 2/3rds of the toolpath, but leaves the second tapered arm untouched. I'm not sure how to force the engraving tool to do the right thing here.

Pictured is the shape, and how Fusion 360 is trying to engrave it. I want that last bit of tail filled in, and clearly Fusion 360 is capable of doing it on the other side.

[ChristopherMarion]

@Anonymous 

Is it possible for you to share the project?

[Anonymous]

Sorry, forgot to export and attach with the original post

[ChristopherMarion · Accepted solution]

Hello @Anonymous 

I played with this for some time and could not get it to behave like you are looking for.  So, I came up with a workaround that may be suitable for you.

Take a look at this video......https://autode.sk/2X4jWWV

I ended up modifying the sketch, creating a construction plane, and then mirroring the good side over to the other side.  It is two toolpaths, but it should give you what you want if you can get over the fact that it is conventional cutting on the mirrored side.

You may be able to mirror the sketch to the other side and see if you get a good separate toolpath instead of mirroring.  I did not try that yet.

[Anonymous]

Thank you! I was playing around with ideas like this, setting up divider lines. Engrave contour select doesn't really appreciate what i was doing without fully re-creating it but I was able to get something like what you demonstrated working; I was hoping to not have to decompose the sketch more considering it is pretty simple, but maybe it's just a bug with engraving. Thanks for confirming it's not just busted on my machine!

Edit: Wow I didn't know that you could mirror stuff in manufacture mode instead of in design mode. That could help with a lot of other stuff I'm doing too, thanks!

[ChristopherMarion]

@Anonymous 

Glad I could be of some assistance.  I do think there is a slight bug here, but cannot really pinpoint it.  Regardless, sometimes you need to think outside the box 😊.

The downside to mirroring is that the cutting direction gets reversed.  Depending on what you are cutting, this can be unwanted (conventional cutting vs. climb cutting).  Hopefully, Fusion development gives us better tools for mirroring in future updates.

Cheers,

[Anonymous]

Thank you for pointing that out. I think if that climb vs conventional thing is an issue (which, it has been in wood before), I can probably split the shape you made across two sketches, which should force it to engrave correctly if I select the contours separately.