Can't figure how to close my sketch so a specific part can be extruded

[Anonymous]

Hi all! 

After doing some exercises and playing with the sketches, I ran into an issue.

In the screenshots attached, you can see that I have started the sketch using circles and then I used the lines to finish drawing the sketch.

As you can see, the only parts that are blue and extrudable are the circle, the center part seems not closed and I can't extrude it.

Any clue on how to fix this ?

Thank you !

Thank you

[TheCADWhisperer]

Your geometry is not properly constrained.

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

[Anonymous]

Here you are !  Thanks !

[TheCADWhisperer · Accepted solution]

Start dragging white dots.

What do you observe?

I recommend that you create ONLY one line (or arc or circle) at a time and fully constrain it before going to next line, arc or circle.

[Anonymous]

Hi @TheCADWhisperer , I guess my first draw was a mess :D.

I have done it from scratch and now it's ok. 

Just have to work on how to usefully uses constraints in my sketches !

Thanks !