Unusual circular pattern behaviour

[Drewpan]

Hi,

I am having a little trouble with some unusual circular pattern behaviour. I am creating a compass rose for a design

and have created some raised and etched features that I have subsequently copied with a circular pattern. I have

been manipulating the timeline to keep things all together. I created an etched line on the face that originally went

to the centre but then changed my mind when I put a hole through the centre and realised that the lines created

small holes through the sides of the centre hole.

I moved the timeline back to the circular pattern of the original lines and selected a different profile to pattern. What

I was expecting was a new set of lines that were the same as the original around the face. What I got was the

original line that I selected the new profile was changed, but the newly created circular pattern features stayed the

same as the original before the changed profile.

As can be seen, the red line is the feature that was patterned and is correct. The new features remain the same as

they were before I changed the profile. If I wind back the timeline and edit the circular feature then the profile is

the one I selected and assumed would be the pattern but all copies are different. I have forced recalculation and I

have changed the number of instances of the copy but it makes no difference.

I have not come across this behavior before so I have attached the file to have a look at.

Cheers

Andrew

[davebYYPCU]

Either edit Extrusion 4th along the timeline, and remove the inboard profiles (2) from that feature.

Or trim the lines out of sketch 1 back to the circle.

(I would avoid patterning faces lowest priority of selectable articles)

Might help....

[Drewpan]

Hi dave,

Editing the 4th extrusion is what I was doing in the image. It changed the extrusion like I wanted but instead of

updating the circular pattern as expected it didn't.

I didn't trim the lines directly because it would have broken the constraints of the sketch. The circle should have

been sufficient to define the shape I wanted extruded, which it was. The mystery is why didn't the circular pattern

update to the new extruded feature on the copies.

Cheers

Andrew

[davebYYPCU · Accepted solution]

Option 1, works as expected.

Breaks the constraints - of course, you are editing the sketch.  Is not fully constrained anyway.

Might help....

[laughingcreek · Accepted solution]

you didn't deselect the profiles extrude4 that created the groove.  it might look like you did because extrude 6 fills them in.  just go to extrude 4 and deselect the profiles you don't want.

[Drewpan]

Hi,

You were right but I cannot see how I missed that. I did try that in the first place and it created what I wanted on

that first feature but not in the patterned features, they kept going. It must have been that because all is now

working as expected. The picture in my first post clearly shows the behaviour but now I have gone back and selected

it again it works fine.

Now the question is: What DID I do to create such strange behaviour?

Cheers

Andrew

[laughingcreek]

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@Drewpan wrote:... The picture in my first post clearly shows the behaviour ...

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the pic clear shows the effect of extrude6 filling in the groove, not that the original extrude 4 was corrected..