Constraints - Circular Pattern

[docara]

Hi,

Just a question.

Why is it that if you have an object which is fully constrained and then you carry out a circular pattern the resulting objects at are no longer constrained but the original is?

thanks

[TheCADWhisperer]

I just tried it - and it work as expected for me?

Can you File>Export and then Attach your *.f3d file here?

BTW - it is almost always better to do a Feature Pattern rather than a Sketch Pattern.

[docara]

Hi,

I have to say I've not noticed it before.

The pattern feature is probably a no go because what you see is just a detail which forms part of an relief emboss.

I'm just wondering do you try it with the axis based on the 0 origin? 

Oh, the bigger part forms something I hope to sell so unfortunately I'm reluctant to upload the file.

[TheCADWhisperer]

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@docarawrote:

... something I hope to sell so unfortunately I'm reluctant to upload the file. 

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Can you reproduce the issue on a new and simple file?

I tend to learn the most about behavioral issues when I attempt to reproduce the issue from scratch.

[chrisplyler]

Probably because you only selected the four lines to pattern. You would need to pattern the four lines, the dimensions (except for the two that orient off of the Origin, because obviously those two are relative to Origin planes and rotating them around will screw them up... so let the Pattern feature things instead) and the constraint symbols.

[steve.nystrom]

Has this been solved? I experience the same behavior.

[g-andresen]

Hi,

Please share the file.

File > export > save as f3d on local drive  > attach it to the next post.

günther

[chris]

Finding this thread years later. The correct answer is to select the constraining feature (e.g. centerpoint of a circle) when you create the array.

E.g. if you are arranging small circles around the diameter of a large circle to create cut-out ridges on a knob, be sure to select the centerpoint of the small circle as well as the circle as the objects to array.

[laughingcreek]

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@chris wrote:...if you are arranging small circles around the diameter of a large circle to create cut-out ridges on a knob, be sure to select the centerpoint of the small circle as well as the circle as the objects to array.

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not found this to be the case at all (and is probably a bad idea since it stacks geometry on top of each other).  Do you have an example where you have to do this to get the sketch to be fully constrained?

[chris]

Hmmm. You are right. I tried to create a simple example case but could not. I know that this fixed the constraint issue in one of my projects, but now I'm going to have to go back and look at it more closely. Thanks for the reply and check!