Timetravel with components

[Sungod3000]

Hi,

Im assembling some parts together and Im hitting some timeline limitations.

I have model A and I insert model B and align everything, now I want to fit parts of B to A. After i inserted the B assembly I break the link to starts the fiting process, however now the alignment/positioning is in the timeline after the B component that I want to modify. So now when I start editing sketches, the timeline goes back before the alignment and I loose all my reference.

I hope my little fotostory explains it better.

The aligment item in the timeline cant move (red arrows on the bottom pic) but is there someway to keep the timeline relationships but for the sketches and bodies to stay aligned?

Cheer

[jeff_strater]

Hi @Sungod3000,

You chose the correct title for this.  Time travel is exactly the analogy I like to use in this kind of question.  Any time you edit a past feature, Fusion will take you back in time to the point when that feature was created.  There are reasons why this is necessary.  Here is a thread that discusses those:  edit-sketch-with-newer-component-positions.

The best way to do this is to plan a bit, I would say.  You can add new features, in the desired orientation, after the positioning features.  In fact, this is a valuable workflow in some cases.  So, you don't necessarily have to roll back to make changes.

Second, sometimes you can reorder the timeline (not in all cases, and it sounds like you tried that).

Third, you can "design in place" in some cases, so you don't need to move things around.

I understand that not all of these are possible in all cases, but I find once I "got" the Fusion model, the need to do this kind of operation rarely occurs.

Jeff

[Sungod3000]

Yes, I had discussed other timetravel paradoxes before and I see the necessity to be strict.

PLanning is of course the way to go but most of the time I design solutions to a certain problem on the spont and then put them into a later context. Ideally that should work without having to remodel everything especially if its just a question of fitting and aligning parts.

Indeed I tried reordering but the parts dont exist before reordering so that would be a serious boots-strap paradox (greetings from Hodor 😄 )

What exactly do you mean by design in place?

and Im one thing I just learning from the topic you linked is that you can actually use the move command on sketch lines when you´re in the sketch plane, so that at least a very basic help, but requires that sketches to follows their bodies which also doesnt happen all the times.

[jeff_strater]

Hi @Sungod3000,

By "design in place", I'm really talking about a top/down design methodology where you design components in the orientation, etc where they need to be, so you don't have to do Moves in the middle of your design history.  For example, say you were designing a box with a lid.  (not a great example, but hopefully illustrative).  Say you design the box first.  Then, you design the lid on top of the box (using projected sketch geometry from the box), so that it does not need to be moved into place.  This will help with the time travel problem.

Jeff