topic Re: Can't mirror a simple sketch polyline using the sketch mirror tool... in Fusion Support Forum

Can't mirror a simple sketch polyline using the sketch mirror tool...

SkOrM94 — Thu, 24 Jun 2021 23:11:36 GMT

Hello,

I'm struggling to get a very basic action done : mirroring a sketch profile using the sketch mirror tool. If I create a simple line, I can mirror it, but with my pattern (polyline), it's not possible (See the screencast).

I have 100+ hours of fusion360 and this is extremely frustrating and time-consuming. Is this a bug or is this another feature for which you need to know 15 hidden rules in order to make it work?

Thanks

Best

EDIT: Oh well, the screencast doesn't want to be posted here (another bug? :))...so I uploaded a .mp4 video of it

Re: Can't mirror a simple sketch polyline using the sketch mirror tool...

SkOrM94 — Thu, 24 Jun 2021 23:02:54 GMT

Re: Can't mirror a simple sketch polyline using the sketch mirror tool...

jhackney1972 — Thu, 24 Jun 2021 23:10:01 GMT

Without your model, everyone will be guessing. Your Screencast is also not available even thought it will not tell the whole truth of the problem. My guess is that your Spline (you call it a polyline) is not on the same plane as the mirror line, you have accidentally sketched it some or all off of plane. Right click on the Spline and see if you see an option, move to sketch plane.

Re: Can't mirror a simple sketch polyline using the sketch mirror tool...

jeff_strater — Thu, 24 Jun 2021 23:24:11 GMT

it seems to work OK for me on a new design. Can you share this design so we can try it for ourselves? Thanks.

Re: Can't mirror a simple sketch polyline using the sketch mirror tool...

jhackney1972 — Thu, 24 Jun 2021 23:30:44 GMT

If, by chance, you do not know how to attach your Fusion 360 model follow these easy steps. Open the model in Fusion 360, select the File menu, then Export and save to your hard drive. Then use the Attachments section of a forum post to attach it.

Re: Can't mirror a simple sketch polyline using the sketch mirror tool...

jhackney1972 — Thu, 24 Jun 2021 23:36:32 GMT

Here is your Screencast.

Re: Can't mirror a simple sketch polyline using the sketch mirror tool...

davebYYPCU — Fri, 25 Jun 2021 00:21:10 GMT

Mirror works for 2d sketch.

You are working in 3d sketch mode.

(Pallet ticked and 3d triad, so obvious)

Sorry, reply to wrong person.

Might help....

Re: Can't mirror a simple sketch polyline using the sketch mirror tool...

jeff_strater — Fri, 25 Jun 2021 00:20:59 GMT

@davebYYPCU - you are clearly more observant than the rest of us! 😀

Re: Can't mirror a simple sketch polyline using the sketch mirror tool...

g-andresen — Fri, 25 Jun 2021 04:55:29 GMT

Hi,

A suggestion for assessment:

günther

Re: Can't mirror a simple sketch polyline using the sketch mirror tool...

SkOrM94 — Fri, 25 Jun 2021 08:17:27 GMT

Thank you all for your answers and your time.

The problem was indeed that the lines were not in the sketch plane. However, unticking the 3D Sketch option from the palette and creating the lines again did not help. Probably because other parts of the sketch used to snap the line were created with 3D Sketch ticked. Though everything was created in the same plane and that (by eye at least, cf screencast) they all looked on the same plane, they were maybe considered as 3D objects. This is uselessly tricky in my opinion...

Anyway, the solution was as proposed by @jhackney1972 to select all->"move to the sketch plane".

Link to the screencast solution: https://autode.sk/2U6d7pi

Hope it helps in the future.

And also thanks @jhackney1972 for the screencast, for some reasons it was "being verified" on my account before getting public, that's why I couldnt post it at the time I wrote ther post, and why I put an .mp4 version of it instead.