Why does rotating a pattern feature duplicate the entire body?

[Anonymous]

Hello there,

I'm a student and have a bit of experience with SolidWorks and now want to get started with fusion 360 as long as I can still get it for free.

i want to create the parts for a finger jointed box:

I created a sketch for one finger, extruded through all to get the cutout and used a pattern to do this along one side.

To get the fingers to the other side, I wanted to rotate the two features (the extrude and the pattern) by rotating them, which looked very promising in the preview:

But when I hit the OK button, I get this result:

Apparently, the (linear) pattern that I want to rotate recreates the entire body.

This is very odd because the result differs drastically from the preview and I was very surprised.

What would be a better (working) approach to do this?

I assume that I do not actually need the rotation but isntead could have simply appointed both edges (on both sides) for the linear pattern and be done with it. Is that correct? Am I missing something here?

thanks for your help

[Anonymous]

Lars has a great tutorial that might help.

[Anonymous]

Thanks for that. I'll take a look.

I'd really appreciate an explanation of why my approach went so terribly wrong.

And also, why the preview of the roation was so different from the result.

The outcome looks more like a bug to me than expected behaviour.

[HughesTooling]

Can you export the f3d file and attach, it will be a lot easier to help. One thing I noticed is you used pattern on path, I'd use a rectangular pattern, it works fine with a single row. Also did you try the other Compute Options. I've attached a sample file using a rectangular pattern.

Mark

[Anonymous]

@Anonymous

It's something weird with your particular design. Because I can repeat your  steps and not a single issue was appeared.

And it looks like on your screenshot the Body1 is also correct. But from where a bunch of patch-bodies were appeared - it's a question...

[Anonymous]

Having a rectangular pattern is not my desing intent. If I need a workaround, I can fall back to this solution. Thanks for that.

I tried other compute options, but they have other issues as you can see below. I attached the file I created for those.

The adjust option looks good in preview, rotates the whole thing as expected, but is missing the final element of the linear pattern.

The identical ption looks good in preview, rotates the whole thing horribly wrong, but is creating the last element in the pattern as expected.

[Anonymous]

Two steps to fix you design:

• In second extrude - set Extent to "All". Or, if you want to keep "To Object" mode - set Chain Faces to "Extend faces".
• In pattern on path - set Compute option to "Adjust"

See screencast: