Cannot Replicate Tutorial

[Anonymous]

Hi,

I'm trying to learn some advanced techniques with fusion, and I'm following this tutorial. After he selects the faces of the inside of the letters, he has some slowdown when he pulls, but nothing major. I get a failure. The fillet/chamfer cannot be completed, and it refuses to change the letters at all. Why is this happening? I went to great pains to replicate exactly what he was doing, and it still fails.

[davebYYPCU]

His video is offsetting faces,

your error is Fillet / Chamfer, 

means you have selections that include selected edges.

You can either change the selection filter, or zoom close to make sure you select the face only.

Might help.....

[Anonymous]

Well, that is the error message I am getting. I am not silly enough to use one command and mistake it for another. I select the exact same faces as he did. I have always said these error messages are garbage 95% of the time, and you just proved it. I guess I need to post a screenshot to prove I'm not an idiot? It is the exact same text that he uses, default font.

[Anonymous]

Did some testing, and the issue appears to be extruding (or in this case offsetting the face of) letters with curves. Offsetting faces one at a time results in success on letters ABEF, and failures on C&D. And B does experience significant slowdown. So what is the issue, do I need a better CPU?

[davebYYPCU]

What - Again the answer is in the error message first line,

(Press Pull is semi automatic, it thinks it is adding fillets to the face and your pull distance is too large for that - noted that the command has reverted to Offset face - but the tutorial worked as expected)

Why - don't know.

No one here said or thinks you are not trying everything

Might help.....

[stickyfox]

Attempted this tutorial and seeing the same error. It does not seem to fail with any number of straight-line-segment curves; only letters with curves like B/C/D. I am definitely selecting only faces.

I don't think it's my CPU altho it is an older one (i7-3770 w 16G).. this seems to be related to offsetting a curve along a radial path. 

I would recommend trying something like this approach to convert the curves to lines and see if that fixes it. But my inclination would be to generate the sketch outside of Fusion as it seems rather complicated. Also maybe message the YT creator and ask if he's overlooked a setting or sketch attribute?

[davebYYPCU]

I figure you found a bug for @jeff_strater to look into, error is persistent.

Considering the final outcome, I would not do it that way.  Try this

Make the cylinder under size. 

(Make the Text depth oversize.)

Emboss the text onto the Cylinder. 

Remove the Cylinder

Create a Sphere at the correct size (New Body)

Offset the sphere face for the cutting surface and

Trim the letters with Split Body as per video. 

Remove the excess.

Combine the letters to the sphere. 

Done.  (No grief - eliminates both the Replace Face and Press Pull operations.)

Might help....

[davebYYPCU]

2 steps backwards.

[Anonymous]

Thanks for looking at this. I knew I wasn't nuts, but didn't have the expertise to present my point.

I'm rather new so your took me quite a few tries to understand. This is a much improved workflow that results in a surface that resulted in a near seamless surface finish, with minor gaps where it did not totally wrap. After fine-tuning the sizes, it creates an absolutely flawless finish. Bravo, sir.

My final numbers for the sizes were 95 for the sphere, 88 for the cylinder, and 7 or greater for the text depth. Is that about what you got? Seeing if I can get a better understanding of how it all works.

[davebYYPCU]

I think you explained the point quite well, wasn't until I made my own model that I could confirm an apparent bug, the video is a fluke.  I still think it comes down to Fusion thinking we want fillets.  The fillet command was upgraded to select faces not so recently.

About right, I used 85, 95, for the solid bodies, 

15 for the Emboss, 

and eyeballed the offset surface for the right look.

Might help...

[Anonymous]

Do you know when fusion was updated? The tut is dated August 16, 2020. Wish @jeff_strater would take a look at this.

[jeff_strater]

I'd be happy to investigate a bug if someone can explain to me exactly what the bug is, and supply a model to reproduce it.  I watched that video.  The author does not explain where the cylindrical text came from.  There are probably multiple ways to get that starting shape, which may have different behaviors.  I created it similar to how @davebYYPCU suggests, and it offset OK.  I'm not saying that there is not a bug, there probably is, I just don't know what the bug is yet.  It may also depend on the font used, the size of the text, etc.

And @davebYYPCU is right, if you are getting Fillet errors, then Press/Pull thinks you are performing a Fillet.  The only way that can be is if you inadvertently selected edges instead of faces.  It's easy to do, I know.

Which brings me to a rant (at Fusion and at myself as part of the development team) and my personal recommendation:  Don't use Press/Pull.  Ever.  If I ran the zoo, we would take that command out completely.  What this command does is simply fire off different other commands based on your selection.  If you select a profile, you get Extrude.  If you select an edge, you get Fillet, and if you select a face, you sometimes get Offset Faces, and sometimes get this "automatic" mode, where it tries to be smarter than you are, and edit a sketch, or edit a feature.  I am not a fan of automatic mode.  Press/Pull was envisioned to be an "easy to use, one-stop command", but I swear, it has done more harm than good.  I know the tutorial said use Press/Pull, and you are just following that tutorial, so this is in no way questioning your methodology or skill or anything, @Anonymous.  This confusion is caused by us alone.  So, this recommendation is for the future.  In the screencast below, I show using both Press/Pull and Offset Faces.  If you look close, you can see that, when using Press/Pull, I am very careful to only select faces, because I have been bitten by Press/Pull before.  But, if you use Offset Faces, you can be assured that you'll not be redirected to some other command, which is what I demonstrate in the second go-round of the screencast. 

[davebYYPCU]

Thanks Jeff, 

The model was not provided, but I replicated the Press Pull error syndrome here. 

In my model (attached) I did not persevere with the error when there was a more efficient version to the end game.

Selected 6 faces

No Value entered, Press Pull the internal faces inwards.  100% fails here.

Drag Distance - Boom.

The Bug - it errors out even though there were no edges selected just faces.

Might help....

[jeff_strater]

interesting.  Thank you for sharing that file, @davebYYPCU .  Will need to investigate a bit, but that does help a lot.  I think the difference in this model and mine is that in yours the text is tapered.  Still not sure what the Fillet error is all about...

[jeff_strater]

OK, now this is weird.  I definitely reproduced the bug - it succeeded with an offset of 1, but failed on 2 or higher.  Now, when I went to record a video for a bug, could not get it to fail.  Eventually it will fail, but the error is different and I expect eventual failure, as the text is tapered.

[davebYYPCU]

My text is tapered????

No, just embossed (with horizontal, cylindrical and radial faces).  Would be the same in any other example.

Finding edges when I did not select any.

(Windows 10 if that helps)

[jeff_strater]

then, I tried again later, and could reproduce it.  Again:  weird.  Must be some internal randomness to it or something.  Created bug FUS-85771 for this.

[davebYYPCU]

Another difference - interface wise - we were using automatic Press Pull, where you dedicate to Offset solid face, under the hood should be the same - but is it?

[jeff_strater]

In this case, I think it is.  I used Offset Faces to make sure there was no funny business with Press/Pull going on.  The fact that I was (sometimes) able to reproduce it with Offset Faces at least proves it is not the Press/Pull abomination that is the problem.