Subtract or slice

[ica_cici]

Need help,

 

I want to cut my first object (yellow) by the second object (red), so I use subtract command.

But nothing happen, it won't works.

I tried the slice command but it doesn't work too.

 

Well, what's wrong with it?

 

Thanks for help.

substract.dwg

[hoss]

how did you create the Object 1, is it supposed to be a solid object?

[ReMark]

I would have drawn a line representing the front edge of your red object and extruded it as a surface and used this to slice the chain choosing to discard the remainder.

[marmo]

This problem happens because the edge of the solid red is tangent to internal face of tha ring.

regards

[marmo]

I believe you need move, even slightly, the solid red, to avoid this.

[ica_cici]

hoss,

 

Yes it is solid. It made from a circle profile sweep to an ellipse path.

 

ReMark,

 

I can subtract the other links using the object 2 (red) as subtracter, but still can't subtract or slice the yellow one.

 

marmo,

 

Yes, maybe you're right, but I need to show those surface section.

Is there any other way perhaps?

 

Than you for help.

subtract.dwg

[marmo]

I moved the solid red along Z axis of a value equal to 0.001.

 

[ica_cici]

Ya it works. thanks Marmo.

 

By the way what do you mean by "The point of contact can not be a dot or a surface"?

[ica_cici]

Hei, I think I found a new trick for it beside moving the object 2 (red).

 

At first I copied the object 2 (red) in the middle of object 1 (yellow), see the green object. Then I used this green object to slice the yellow one, and keep the both sides. I changed it's half with magenta then finally subtracted it by object 2 (red).

 

Well, that's it. I think I already solve my problem now.

 

But thank you guys for the advices.