Sketches and bodies sometimes not available in browser?

[Anonymous]

I created sketch A and stopped editing.  I did a press pull to turn it into a solid model.  I then created sketch B on the same plane and added some stuff to it.  Now I want to add something to sketch A that's aligned with parts of sketch B, but when I edit sketch A both sketch B and the body are removed from the browser.  Not only can I not make them visible, they aren't even listed.  If I stop sketch A and edit sketch B, then I see all three items (sketch A, sketch B, and the body) listed in the browser and I can toggle visibility on any of them.  I expect sketch A to behave the same way but it does not.  Does anyone know why, and/or how to fix it?

[Maowen_Zhang · Accepted solution]

@Anonymous, this is one attribute of "history based" parametric design. The sketch A and sketch B are created in order as they show up in timeline. When you go back to edit Sketch A, Sketch B disappear (disabled in timeline) which will be computed / updated after finish editing Sketch A. The timeline feature is useful for checking design history, you can do roll back by simply dragging it and even play it. Thanks for your post, please share any further comments or ideas, thanks! 

[TrippyLighting]

You will not be able to fix this as there's nothing wrong with it. You may have to adjust your workflow 😉

You can't add something to sketch A because sketch B was created later in time, after Sketch A.

When you start editing Sketch A you basically roll back the timeline to sketch A. Basically if you want to reference of a sketch you need to create the sketch you want to reference of first. 

[Anonymous]

Hi, what I often do when running into this (i.e. not planning ahead) is first be sure the sketch you want to reference is free of links, by drag selection box selecting everything in it, right clicking and choosing Break Link if it appears.  Then you can normally click and hold on that sketch in the timeline and attempt dragging it "back in time", to before the sketch that needs to reference it.  Note that it may take a pause before allowing you to drag it back, since the program is calculating if there would be any conflicts from the time rearrangement.  There are a few other caveats/tricks that are needed sometimes, such as first moving component creation events in timeline back first, but in general is pretty straightforward.

A detail of this method, is the order of sketches in the browser tree will not update to reflect the rearrangement until go into/edit then exit reference sketch that moved back in time.

Have fun Fusioning!

Jesse

[Anonymous]

Thanks!  I'm quite new to Fusion 360 and I hadn't wrapped my mind around all the implications of the design history yet.  That makes sense now.