topic Re: Why can't I use Primatic Conversion as I have a paid subscription in Fusion Support Forum

Why can't I use Prismatic Conversion as I have a paid subscription

tmbespalko — Fri, 05 Sep 2025 17:27:59 GMT

Why can't I use Prismatic mesh Conversion as I have a paid subscription.

Mark

Re: Why can't I use Primatic Conversion as I have a paid subscription

TrippyLighting — Fri, 05 Sep 2025 14:32:37 GMT

Please provide more detail!

Do you have this problem with a particular model?

Can you share that model?

Re: Why can't I use Primatic Conversion as I have a paid subscription

TheCADWhisperer — Fri, 05 Sep 2025 17:16:47 GMT

@tmbespalko

Are you on Windows OS or are you on Mac OS?

If on Windows run the Windows commands Shift Win S and Ctrl v to copy and paste what you see on your screen into your next Reply.

I suspect that there is a similar technique to show what you actually see on your screen if you are running on Mac OS.

To share a model - Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

Re: Why can't I use Primatic Conversion as I have a paid subscription

tmbespalko — Fri, 05 Sep 2025 17:23:46 GMT

The attached screen capture shows the result from a faceted mesh conversion. There were no issues from that process.

However, the screen capture shows the setup for a prismatic mesh conversion. Although the conversion shows the Select box highlighted, the conversion refuses to select the 3dBenchy for conversion.

Based upon some research on line, this is indicative that Autodesk Fusion thinks that I am using the free downloadable version of Fusion 360, which does not include the Prismatic conversion, and not the version of Fusion 360 that I have purchased.

If that is the case, then Autodesk needs to provide me a link to the correct version, which includes the Prismatic mesh conversion. I will reload the correct version and move on.

Mark

Re: Why can't I use Primatic Conversion as I have a paid subscription

TheCADWhisperer — Fri, 05 Sep 2025 17:31:23 GMT

@tmbespalko

You didn't include screen capture of your license type?

You didn't Attach your file?

I don't see any Face Groups?

Re: Why can't I use Primatic Conversion as I have a paid subscription

TheCADWhisperer — Fri, 05 Sep 2025 17:34:51 GMT

@tmbespalko wrote
Based upon some research on line, this is indicative that Autodesk Fusion thinks that I am using the free downloadable version of Fusion 360

I recommend finding a new research source - you can verify yourself the license type - no need for flawed research sources.

Re: Why can't I use Primatic Conversion as I have a paid subscription

TheCADWhisperer — Fri, 05 Sep 2025 17:35:44 GMT

@tmbespalko wrote:

If that is the case, then Autodesk needs to provide me a link to the correct version, which includes the Prismatic mesh conversion. I will reload the correct version and move on.

One version - functionality depends on license type.

Re: Why can't I use Primatic Conversion as I have a paid subscription

TheCADWhisperer — Fri, 05 Sep 2025 17:37:52 GMT

@tmbespalko wrote:
The attached screen capture shows the result from a faceted mesh conversion. ~~There were no issues from that process~~.

@tmbespalko

Actually, you must create (and in this case Edit) Face Groups before the conversion.

The conversion will likely be only partially successful in replacing triangular planar facets.

Attach your file here and end all doubt.

Re: Why can't I use Primatic Conversion as I have a paid subscription

TrippyLighting — Fri, 05 Sep 2025 17:48:40 GMT

You cannot convert a mesh that is already converted into a faceted solid body.

Also, before converting the model with the "prismatic" method, you need to generate face groups.

I downloaded the .stl from Thingyverse and tried it. I expected this to be a challenge and I was not disappointed 😉

Even when you create the face groups manually (direct edit), I am confident that this will not convert completely.

Re: Why can't I use Primatic Conversion as I have a paid subscription

tmbespalko — Fri, 05 Sep 2025 18:07:12 GMT

Plan type screen capture attached. I don't understand why I have to provide information that Autodesk already has!

Re: Why can't I use Primatic Conversion as I have a paid subscription

tmbespalko — Fri, 05 Sep 2025 19:09:11 GMT

So what I am hearing is that Autodesk Fusion 360 is not able to deal with triangular facets? 100% of the meshes that I have to import and convert use triangular facets.

And for the record, I was following the instructions from a youtube video from Autodesk that stepped through the process of starting with an imported mesh and ending with a solid body.

If you have a better process to follow, please provide the detailed steps.

Thanks, Mark

@tmbespalko - this post has been edited due to Community Rules & Etiquette violation

Re: Why can't I use Primatic Conversion as I have a paid subscription

TrippyLighting — Fri, 05 Sep 2025 18:37:57 GMT

Obviously, Fusion can convert a triangulated mesh into a faceted solid body. However, under the hood, all mainstream CAD software does NOT represent 3D geometry in the form of meshes, but in the form of analytic geometry (planes, cubes, tori, cones, etc.), NURBS surfaces. Usually, these are stitched into a BRep.

As opposed to triangulated meshes, this form of geometry is free of resolution and retains topology. In essence, when models such as Benchy are exported from a BRep model into a triangulated mesh, vital information is lost, and in many cases, it cannot be fully recovered.

As such, sometimes the "Prismatic" conversion works right away, sometimes it needs manual help, and sometimes it doesn't work at all..

This is a technical/mathematical limitation for all CAD software, not just Fusion.

The question is whether or not a conversion is even needed. That depends on what changes you want to make to the model and how you may want to manufacture it.

Re: Why can't I use Primatic Conversion as I have a paid subscription

TheCADWhisperer — Fri, 05 Sep 2025 18:48:08 GMT

@tmbespalko wrote:

I don't understand why I have to provide information that Autodesk already has!

@tmbespalko

This is a peer-to-peer user forum. We are users just like you. We are not Autodesk.

Sometimes an Autodesk employee will contribute to the discussion.

Re: Why can't I use Primatic Conversion as I have a paid subscription

TheCADWhisperer — Fri, 05 Sep 2025 18:51:59 GMT

@tmbespalko wrote:
So what I am hearing is that Autodesk Fusion 360 is too stupid to deal with triangular facets?

You don't need to hear anything from any source other than observation with your own eyes.

If you observe the stl geometry you should observe that it is all triangular planar faceted faces, no curves, not one.

In other words, you should observe that stl is generally rubbish compared to the real world geometry around you.

In the last century we referred to this as the GIGO principle.

Maybe in this century IA will help interpret the true Design Intent, but we are not there yet. Have to give it some help be defining Face Groups. And still expect issues.

Re: Why can't I use Primatic Conversion as I have a paid subscription

TheCADWhisperer — Fri, 05 Sep 2025 19:22:04 GMT

@tmbespalko wrote:
And for the record, I was following the instructions from a youtube video from Autodesk

If you have a better process to follow, please provide the detailed steps.

@tmbespalko

Did the video show how to generate and edit Face Groups (I do not see any in your screen capture image)?

Can you provide a link to the referenced video?

Attach your stl or *.f3d file here and someone will demonstrate the steps using your actual geometry.

Re: Why can't I use Primatic Conversion as I have a paid subscription

TheCADWhisperer — Fri, 05 Sep 2025 23:46:34 GMT

@TrippyLighting wrote:

I downloaded the .stl from Thingyverse and tried it. I expected this to be a challenge and I was not disappointed 😉

@TrippyLighting

Others are sure to come across this discussion thread.

Can you Attach the original *.stl file here so that I can create a video (for the benefit of other observers) that explains why certain geometries do not easily covert?

Re: Why can't I use Primatic Conversion as I have a paid subscription

TrippyLighting — Fri, 05 Sep 2025 23:53:24 GMT

The "original" mesh can be found following this link to Thingiverse.

I have it attached for convenience.

Re: Why can't I use Primatic Conversion as I have a paid subscription

CGBenner — Wed, 10 Sep 2025 18:48:37 GMT

@tmbespalko

Hi, do you still need help with solving this issue?

Re: Why can't I use Primatic Conversion as I have a paid subscription

tmbespalko — Fri, 12 Sep 2025 00:47:38 GMT

Greetings Chris,

Actually, I have yet to get the Prismatic option on the transformation from mesh to solid. The best that I have gotten from the Prismatic is:

Yet the faceted completes just fine:

So I have stopped trying to make that work as the results make no sense to me.

The current battle that I am in is how to get a mesh file into Cura that won't drop to the surface. I have spit the 3DBenchy into two parts. The part with the hull works just fine. The part without the hull drops to the surface making aligning the two parts practically impossible. I have spent today trying to figure out how to create a 3mf file that includes the origin point within the file in a way that Cura will work. I have yet to find a solution to lock the meshes together in such a way that the 3mf file doesn't simply dissolve and all the mesh pieces just drops to the Cura surface. The Fusion 360 align function doesn't seem to work with a mesh. I created a new master Fusion 360 file with a top level component, with the meshes and origin under it, and that does not seem to help anything. So after over a week I have yet to be able to print a two color 3DBenchy and successfully printing a full 3dBenchy in one color.

Suggestions appreciated.

T. Mark Bespalko

Re: Why can't I use Primatic Conversion as I have a paid subscription

TheCADWhisperer — Fri, 12 Sep 2025 02:40:03 GMT

@tmbespalko

I have been working on a video for this problem in my spare time - but haven't had much spare time.

In my experience - the modeled text causes more issues than anything else in cleaning up a mesh like this.

If I were really serious about this on my end, I would take it over to free Autodesk MeshMixer and attempt to remove the modeled text before solidifying in Fusion.