Hi,
Normally the forum recommends a couple of things with sketches. Try to keep them simple and limit them to a few
features, then use the fusion tools to do you modelling. If you are doing something complicated then do it with
several sketches. The reason for this is that if a sketch is too complicated then it is hard to follow. Another reason
is that the way fusion deals with sketches and they way it deals with the modelling tools are quite different.
The best example I can give you is this.
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All I did was make a fully constrained rectangle. Then I put a fillet onto a corner and it immediately gives me a
warning. This particular sketch is fully defined but some slightly more complicated ones break and I then have to
go over the whole sketch and fully constrain it again.
If I extrude my original rectangle and then use the fillet tool.
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What I will get is exactly the same end result that I was attempting to do by putting the fillet in the sketch but this
time there is no error.
When you are modelling it is the sketches that guide you to create the model from the tools. It is not the final sketch
that you base your engineering drawings, animations, simulations and manufacturing tool paths upon, fusion creates
all this stuff from the final model.
Good workflow says keep the sketches simple and use the tools to model. You will end up with much better and more
accurate models and the follow on operations you use the model for will be more robust.
Cheers
Andrew