Simple circle is not round after emboss on cylinder. Is that a bug?

[sz.dombi89]

I am trying to Emboss some simple dots onto a cylinder surface, but the result is not what I expect.
Is that how this feature works or there is a bug here?

szdombi89_0-1630666443033.png

szdombi89_1-1630666483390.png

[CGBenner]

@sz.dombi89 

From the images your cylinder appears to have a taper in it.  This could be natural deformation from projecting a circle onto a tapered cylinder.  Can you share the model?

[sz.dombi89]

There are nothing special on the cylinder.

[TrippyLighting]

That is almost certainly a bug, but I'd also venture a guess that the emboss tool is almost certainly the wrong tool for the intended geometry! 

[sz.dombi89]

That was just an example, I am trying to put multiple holes around the cylinder. I do not know, which other method would fit for this, but simple extrusion definitely not. The only workaround I see is to make multiple tangent planes around the cylinder to extrude as much perpendicular as possible, but it takes a lot of time to make for all holes and I want to make this parametric also.

szdombi89_0-1630671992526.png

[g-andresen]

Hi,

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@sz.dombi89  schrieb:

The only workaround I see is to make multiple tangent planes around the cylinder to extrude as much perpendicular as possible, but it takes a lot of time to make for all holes and I want to make this parametric also.

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Create 1 instance based on  a sketch on a tangent plane and use it to create a circular pattern.

günther

[CGBenner]

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@g-andresen wrote:

Hi,

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@sz.dombi89  schrieb:

The only workaround I see is to make multiple tangent planes around the cylinder to extrude as much perpendicular as possible, but it takes a lot of time to make for all holes and I want to make this parametric also.

---

Create 1 instance based on  a sketch on a tangent plane and use it to create a circular pattern.

günther

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Like this?

CGBenner_0-1630674717440.png

or similar?  (I'm probably the biggest newbie when it comes to Fusion!)

[TrippyLighting]

Lets first recognize that the geometry of the holes as currently created by the emboss tool is unacceptable and there is clearly a bug here that should be recorded!

BUT, even if the emboss tool would work as expected, it is possible that it does not create holes with a geometry that would fit the task. So, for example you would not be able to fit a cylindrical pin into these holes, because that is not how the emboss tool is intended to work.

So the question is really, what is the purpose of these holes ? 

[CGBenner]

@TrippyLighting 

Could it simply be that Emboss is trying to use "wrap to face", like in Inventor, and that is what is causing the distortion?  I haven't used Emboss enough to know if wrap to face is a toggle, or the default.

[g-andresen]

Hi,

I was referring to post #5 by @sz.dombi89 which talks about extrusion.

günther

[jeff_strater]

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@TrippyLighting wrote:

Lets first recognize that the geometry of the holes as currently created by the emboss tool is unacceptable and there is clearly a bug here that should be recorded!

That is not true.  Emboss is a "wrap" operation, not a projection.  When you wrap a circle onto a cylinder, you do not get a circle as a result.  The geometry produced by Emboss in this case is what is expected, I believe.

[TrippyLighting]

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@jeff_strater wrote:

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@TrippyLighting wrote:

Lets first recognize that the geometry of the holes as currently created by the emboss tool is unacceptable and there is clearly a bug here that should be recorded!

That is not true.  Emboss is a "wrap" operation, not a projection.  When you wrap a circle onto a cylinder, you do not get a circle as a result.  The geometry produced by Emboss in this case is what is expected, I believe.

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Well, yes, that is correct. They shape would be elliptical.

If you take a closer look at the shapes that are formed by the emboss tool, those don't look very elliptical to my eye:

TrippyLighting_0-1630681096705.png

[TrippyLighting]

I created the proper geometry (green) using a sheet metal approach. when overlaid with the geometry created by the emboss tool (red) the deviation can be seen. 

TrippyLighting_0-1630686303999.png

[sz.dombi89]

So the best workaround I could find out to use a 20+ side polygon instead of the circle.

szdombi89_0-1630758193807.png

[TrippyLighting]

I'd love to help, but before I can do that you need to answer the question I already asked.

What is the purpose of the holes?

As I already mentioned, even if the emboss tool would work as expected, the holes would have an elliptical shape. IS that what you need?

If that's the case the sheet metal approach I had attached to my last post would do what you need.

[g-andresen]

Hi,

I was able to recreate the process in the present file completely with the same error, but created an error-free embossing process in a new file.
From my point of view, there is a problem in the file at hand.

günther

[sz.dombi89]

It is enough for me now. I just need the holes for visual representation
onto a 3D printed part.

Regarding the Bug report. Is that possible to mark this post for the
support or I need to make a repost with the same issue there?