combine tool is not working

[norgmonster]

Hi,

I've spent the last 3 hours trying to combine a body with a sheet-metal body. I've done this a 1000 time on similar projects with it working fine.

Now, when I try it says:

Error: There was a problem combining geometry together.
If attempting a Join/Cut/Intersect, try to ensure that the bodies have a clear overlap (problems can occur where faces and edges are nearly coincident).
Failed to Boolean bodies together

I also get error messages like:

Error: inconsistent edge-face relationships

Both sides to join are flat and the same size so I don't know why it would be having an issue. I'm also not a stranger to fusion so have tried a number of things.

Can someone please help?

Thanks,

Jonny

[norgmonster]

Not ignoring. I just don't know what it meant.

Your video was a big help.

I contacted you because I needed help. So I would never deliberately ignore or disregard the advice of someone fare more knowledgable on the subject than me.

Thanks again for your time to this point  :-).

[TheCADWhisperer]

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@norgmonster wrote:

Do you have any suggestions on specific tutorials that can help (beginners guide to constraints tools in Fusion 360)?

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By the time we finish this project - you will know how to create an efficient sketch.

[TheCADWhisperer]

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@norgmonster wrote:

I'm also not familiar with a lot of the terminology you used in the video.

Do you have any suggestions on specific tutorials that can help (beginners guide to constraints tools in Fusion 360)?

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Back in the last century when I was in HS (Class '75) we were required to take a class in Geometry (and Algebra 1 and 2 and Trigonometry) where we learned these terms.   I guess Geometry is no longer a HS graduation requirement in this century.

https://youtu.be/lS6PranD8Js

https://forums.autodesk.com/t5/fusion-360-support/trim-a-body/m-p/9666247#M96108

https://forums.autodesk.com/t5/fusion-360-design-validate/repeatable-crash-when-changing-parameter/m...

[norgmonster]

25 years after you, I also took it ;-).

Here in the UK, it's still considered essential learning.

I know what each tool means in a literal sense. I was referring to how the constraint tools are applied in Fusion 360, how best to use them, what the difference between a blue and black line is and why it's important for an optimised and well oils sketch ;-).

Thanks for the video link.

Let me go through it and get back to you.

Until then thanks again for your help.

Stay safe,

Jonathan

[TheCADWhisperer]

I will get around to demonstrating the brick pattern tomorrow.

Bump this back to the top if it gets lost in the shuffle.

BTW, are you going to 3D print this?  A consideration of the Z-axis might save some time.

[norgmonster]

I'm going to 3d print a NYC style apartment fire escape. The bricks are going to be made out of foam board. I'm making everything in Fusion first so as to get the layout right.

See attachments 🙂

[jeff_strater]

@norgmonster - in addition to all the great advice here from the experts, particularly @TheCADWhisperer (always listen to him), there is another, probably Fusion-specific issue that this design exposes.  When you model like this (copy body, move, combine, repeat), like you do in this section:

The resulting body gets really heavy.  The reason is internal, probably not something you are interested in, but the essence is:  each feature which modifies a face gets a "tag".  So, when a face has been modified by many, many features, these tags become huge, and this bogs down all parametric operations.  For instance, this face:

has, I think, 85 tags on it.  Other faces in the model are similarly heavy.  In the method that @TheCADWhisperer will show you, this is avoided, so the model should be much faster all around.

[norgmonster]

I'm not sure I fully understand the hole compounded "85 tags" thing but I'm sure that what @TheCADWhisperer has to tell me will make thing clear. One would think that more complicated bodies with thousands of micro faces would have the same taxing effect. I get that it comes down to how a body is originally generated. As you surmised, I'm not that interested in the why or how's behind Fusions internal operation. Just as long as It can work smoothly for me ;-).

Thanks for the help so fare.

[TheCADWhisperer]

Attach your latest file here for next set of steps.

[TheCADWhisperer]

Note the simplicity of the Timeline.

[norgmonster]

That's interesting.

Looking at the steps in the timeline, I can surmise as to how it was done. Based on how the "old me" would do it.

It looks like you sketched out one brick, then extruded it. Then you used the pattern tool to duplicate it across and down. Finally, you combined them all together (several hundred in all).

That leves the issue of how you added the windows and offset the brick pattern every other line?

I can only guess that it has to do with how you used the constraints tools withing you sketch steps?

[TheCADWhisperer]

All wrong.

One Sketch.

One Body.

[norgmonster]

Ok.

I will look at the attached file and see for myself.

I will first need to upgrade my Fusion in order to open it.

I'll let you know how I get on.

[TheCADWhisperer]

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@norgmonster wrote:

I will look at the attached file and see for myself.

I figured out a way to simplify it a bit more, but I am loosing interest. (My sketch was a bit more complicated than necessary.)

[norgmonster]

Thanks.

I appreciate ANY interest :-). No need to go out of your way. 🙂