Timeline bug - offset face and rotational symmetry

[nigel76FS8]

I've found another bug, this time in the timeline or else with the rotational symmetry and offset face command.

I've drawn a tube. Said tube has notches cut into the end. I'm doing these using a sketch with a single 0.001mm offset, then using rotational symmetry to duplicate the 7 copies. That works great, visually showing the positions. Next, I do "offset face" for the original notch. All 7 notches change! This is clearly wrong. So I offset face the next notch instead, and it works fine. And the next, and so on. I get back to the first notch, and we are now 6 timeline elements down the timeline, and yet changing the first notch with offset face then changes all the notches again.

This makes zero sense - if I wanted to change things before the symmetry/rotation was done, I'd go back and change it there!

Anyone got a workaround? The idea is to have the cuts parameter driven, and this clearly is breaking behaviour.

[jhackney1972]

Please attach the model exhibiting these issues.   If 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 as a F3D or F3Z file to your hard drive. Then use the Attachments section, of a forum post, to attach it.

[nigel76FS8]

That should do you.

[HughesTooling · Accepted solution]

Are you starting offset face using Press\Pull? If you're using press pull you need to select New Offset not modify existing feature. If this is not what you're doing can you create a screencast because for me using Offset from the modify menu does not effect the other notches.

[jhackney1972 · Accepted solution]

There is not Timeline issue here and also this model is not the one you mention in your original post.  The original Extrusion is the one your patterned.  Any changes to that extrusion will affect the others in the pattern, but any changes to it or the others using the Offset Face command will not affect all of them, just the one you are using the Offset Face command because it is not related to the original extrusion.  You did this already in your model.

[nigel76FS8]

Thank-you to both of you. The answer is, Press-Pull targets the original action unless you tell it not to, which is a good solution, and the other answer is to not use press-pull!