I created this sketch and used it as a basis of creating the model below. In practice I learned that the sizes of the objects needed to put in the boxes is irregular and I need to change the length of the base by 1mm, which I thought would be simple. However, I can't figure out how to move either side without the geometry deforming in unexpected ways.
2 questions - how can I make this base 1 mm wider and how can I understand what constraints are actually applied and how they work?
If you attach your model or file, the Forum could help you a lot more. 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.
John Hackney, Retired
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Sketch 2 appears to be imported. Hence here are no constraints nor dimensions, before you start adding them.
At the time you imported the sketch a face was existing to put it on. That face no longer exists, and there is no construction plane to put it on, either. Deleting anyway, when given the warning creates yellow icons, and sometimes red ones. Use Undo to fix that, before saving.
You don't save time importing the sketch, takes this many constraints and dimensions to fully define it.
If it were me, this sketch only needs 2 lines, but that is advanced stuff, at your stage.
When you use Move in the Timeline, you are going backwards.
Blue, white and orange articles in sketches are not fully defined, and you have one fully defined sketch in this file (wasn't imported) and one empty one.
Change any dimension in this sketch and it will behave in a normal manner.
Might help....
Fusion
