bounded areas in a certain sketch not shading blue / extrudable

[maker9876]

I have a sketch where bounded areas do not shade blue and are not therefore selectable for extrusion. Even if draw a circle on the origin! If I create a new sketch everything works fine. Have tried restarting F360.

Yes, there are other elements in the sketch but everything is Fixed (shows up green). Is there anything I should check that might explain the lack of shading of bounded areas? (And actually it's not the very first time this has happened.)

(No selection filters are applied.)

[etfrench]

Attach the file to reduce the guessing 😀  File/Export/Archive file *.f3d

[maker9876]

It's the very first sketch in the timeline.

(What comes after may now be broken because am modifying that sketch to take a new approach.)

[etfrench · Accepted solution]

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[maker9876]

Amazing!

Thanks so much.

Didn't even know that checkbox existed!!

[tonyXTMAY]

Hi,

I have a similar problem but in my case, this solution does not do the trick. It is an array of metal pipes and all pipes work perfect except Pipe04. If you then look at the underlying sketch, then you can see that the top area is not coloring light blue.

This is Pipe03, which is ok:

This is Pipe04, which is not ok, and the reason why the subsequent revolve/extrude/move do not happen:

All the other pipes are ok, so I wonder why this one on the left is not, so any help will be greatly appreciated.

[etfrench]

Extending the vertical line will close the boundary and still allow the revolve to work:

For future reference use the Divide and Conquer method to locate the problem.  Simply draw a line through the open boundary.  If one side turns blue draw another line through the open side.  Continue until the problem is located.  Note: You can also just move the line or one of its endpoints in the same fashion.

[tonyXTMAY]

Hi etfrench, thank you very much for your reply. I tried many different things like redrawing all the lines which did not solve it, and as all the other (auto generated from a parameter list) sketches worked, I was a little lost. Still need to investigate why this one behaves different over all the others, but the Divide and Conquer method is a great tip to find the problem. Thanks a lot.