How to cut following several sketch shapes?

[Anonymous]

 

I want to follow the red line and cut like this in the body of my object.

I tried extrude with "cut" and negative distance and it usually works. The problem is that I can not select one of the small circles to apply extrude. I tried also with "hole", but the hole is not the same as extrude on a circle. A "hole" leaves some metal on the edges of the circle.  

[TheCADWhisperer]

Attach file here.

[chrisplyler]

1. Do you have Profiles hidden in that sketch with the circles? I can't see the Profiles in your picture. If they aren't visible, you can't pick them for the Extrude tool.

2. You'll also need to create a Profile on the right hand side of all those circles. The easiest way would be just to draw a rectangle around the whole mess, and make the right and bottom sides tangent to the furthest right circle and the lowest circle, or otherwise add some lines to close in the desired Profile area such that you'll be able to select it for the Extrude tool.

[MoshiurRashid]

Hello @Anonymous 

I've created a screencast video for you to guide you how you can cut this shape.

Link: https://autode.sk/2zhs9hi

[Anonymous]

Thank you very much for your replies!!!

Really appreciated the screenshot and the screen-cast. 

Still I do not understand. I can select the corners of the big circle, but not the small ones ???????

Actually my sketch is more complicated in general. My circles are not with tangent constraint to each other because I need to put my measures. That is why I have put everything in squares and then I have added the circles inside each square. 

Still I can not select everything I need to make the extrude, specifically the corners (the part inside the the square, but outside the circles).

Thank you again.

[davebYYPCU]

You can select any area with blue shading, no blue shading - means

not everything is in the same sketch, or

holes in the outline, or

hide profile is ticked.

white points in sketch for holes, and blue lines will keep you awake at night.

Might help...

[Anonymous]

I am giving up. I can not believe that it is not possible. 

This tool does not work for existing designs. If you need to put your measures then you enter in some kind of mess of constraints. You also get invisible holes - lines not touching and so selection does not work. But you do not see that. You try to constraint them - you can't because it gives you an error of over constraining. I suppose this error is the most hated, it does not tells you which existing constraint is the problem.

Even zooming does not work. I am really disappointed.

[MoshiurRashid]

@Anonymous 

We already requested you to attach the file here. 🙂

Please attach it so that we can help you better.

File> Export> f3d

[TheCADWhisperer]

---

@Anonymous wrote:

 I can not believe that it is not possible. 

---

Where did you get that idea???

File>Export and then Attach your *.f3d file here and end all doubt.

[Anonymous]

Here is the project.

I am also trying with a spline but it does not work. 

Fusion 360 crashed 2 times while  calculating the spline and is slow, sometimes it takes 2 minutes...

The spline also does not work because you need a lot of points which you can not put ... because of the above and if the spline is not perfect you won't be able to make the selection.

I am really disappointed.

[davebYYPCU]

@Anonymous  I will agree with you, shouldn't be like this,

@jeff_strater this sketch in not recognising profiles.  The 3 circles on lower right, are not profiles, but the squares are.

The top right spline is not dividing the profile either, Divide and conquer fails and one occasion destroyed some unassociated profiles.

The spline on the left side, is not on sketch plane, and when moving it to the sketch plane, errors out with Failed to solve, even though it is fully dimensioned....

Can you did into this one?

[jeff_strater]

thanks, @davebYYPCU .  Yes, this seems to be a bug in profile selection.  I've created FUS-64206 to track this bug.  

[TheCADWhisperer]

---

@Anonymous wrote:

I am really disappointed.

---

I can help you - but first you have to accept that you are not using best techniques.

(Starting with constraining Sketch1 with obvious symmetry about the origin.

Shall I continue?