Face is not created by a collection of lines and arcs describing a closed shape. What went wrong?

[rshouker]

I created a sketch (sketch 10 in https://a360.co/3A1Ui7e ) I know it is strange looking, but it is actually suppose to create a well defined close shape.  However, Fusion 360 does not recognize it as a face. Why? What have I done wrong?

The "sun" the area between the inner circle and the rest is not recognized as a face

The "sun" the area between the inner circle and the rest is not recognized as a face, the "rays" are not just line segments, they have a small width. Just to convince you I haven't misaligned anything, I zoomed in on one ray, and since I used circular pattern, it's all the same.

This is just to show you than I didn't misaligned the segments.

[jeff_strater]

the link that you shared does not allow download.  Can you export the design as a Fusion Archive and attach it here?

Possibilities:

• you have a "leak" somewhere in your profile.  All those white dots are possible culprits
• some/all of the sketch is not on the sketch plane.

But, if we have the design, we can fix it quickly for you

[rshouker]

Attached. Thanks.

[rshouker]

OK, solved it be using the "coincident" constraint, one by one; can you point me to some resource that could teach me how to avoid this situation when applying circular pattern, without having to patch the linking points one be one?

10x

[jeff_strater · Accepted solution]

yes, you are correct.  There are small gaps at all of the intersections that I looked at:

I don't know how you created this, so I can't really comment on that.  However, here is how I would go about it.  Personally, I would not even bother with the trim, but if you want the circle to be trimmed, I would pattern the geometry first, then come back and trim later.

[davebYYPCU]

Your sketches are not fully defined, if they were defined as you go, those unconstrained end points would not happen.

If you are of a mind to pattern a set of sketch articles, Fusion patterns modeled articles more efficiently.

You are not working accurately enough for Fusion.  In your case delete the circular pattern, change the finger geometry to all black articles with constraints and dimensions.  Projecting detail from previous sketches saves lots of work.

As I would do it. 

[g-andresen]

Hi,

pattern feature instead of sketch elements

Screencast

günther