Timeline

Timeline

Another basic concept in Fusion is a series of events. Many different operations may need to be performed to create complex shapes, and Fusion keeps track of this in the Timeline. Different icons represent different operations, like New Sketch, Extrude, and Revolve.

Anything before the slider is what is computed by Fusion (visibility depends on your own visibility settings in the browser and nothing after the slider will be computed until you move the slider past it). As a result, when you edit something earlier in the timeline, always move the slider back first before making changes and then slowly move it back to the present to make sure that any errors along the way are relatively easy to fix. Otherwise, errors propagate more errors, so a simple fix of one error could have prevented fifteen others that appeared, but once those fifteen appear, fixing the original error doesn't do anything because it's too late.

You can drag things around to change their compute order, but you are limited by dependencies between objects. For example, an extrude based on a sketch cannot be dragged before the sketch and vice versa.

Errors

There are many different errors associated with different tools, but their fixability depends on how well you made your CAD and how volatile the tool is. Sketches with projections, for example, are virtually unfixable unless started from the beginning. Sketches without projections solely may need you to redefine their plane. Other tools may throw a temporary error but if your open them up and click OK then they may resolve. Fillets and other tools under the Modify menu are often unfixable.