topic Re: Step file import renames bodies. in Fusion Support Forum

Step file import renames bodies.

kymC6Q8L — Wed, 27 Jul 2022 21:24:35 GMT

Hello,

Is there a way to have fusion respect the body names that exist in the step file when importing into the scene?

The step file was exported from a fusion360 project and i can see that all the body names are intact in the step file, however, when fusion imports them into a new Session (im not sure the correct word for this process) all the body names are replaced with standard Body<number> naming convention.

Is there an option im missing?

Cheers
Kym

Re: Step file import renames bodies.

jhackney1972 — Wed, 27 Jul 2022 22:52:55 GMT

In the attached Screencast, I go through the process of showing you the Component Names in the original model, going into the Web Database and exporting the assembly as a STEP file and then opening that STEP file and showing you the Component Names are the same. Please provide a Screencast of your process so we can see what you are doing.

Re: Step file import renames bodies.

kymC6Q8L — Wed, 27 Jul 2022 23:40:31 GMT

Hi John,

thanks for the reply.

Components are not the issue, the body names are.

I dont have any audio right now, but i have made a super simple example and recorded the steps i go through to get an imported step file with incorrectly named bodies.

Steps shown:

File > export > type Step.

File > open > select previously saved step file.

Let me know if i need to provide further examples.

Cheers

Kym

Re: Step file import renames bodies.

jhackney1972 — Thu, 28 Jul 2022 00:27:16 GMT

You are correct, body names are not maintained. I usually have no need to name bodies or retain the names but your workflow may have some particular need for this.

Re: Step file import renames bodies.

kymC6Q8L — Sat, 30 Jul 2022 14:18:44 GMT

Some of the materials get dropped or custom mass's added to parts, i know what they should be, i can match them if i have the name of the body preserved.

im going to try and use the volume and area of the body to match against.

The the project im using for testing this workflow, in theory i could do it by hand, match up the materials and check thast the custom mass has carried along as there are only 150 bodies ... but the main project i need to run this on has well over 6k of bodies, so stream lining this process is what im trying to aim for, and we will need to do this workflow over and over again.

Anyway thanks for your help, if you have any other ideas for how i could achieve this, im all ears.

Cheers

Kym

Re: Step file import renames bodies.

TrippyLighting — Sun, 31 Jul 2022 11:54:32 GMT

~~1. What software does the STEP file originate from?~~

If you have access to the original software and CAD file it might make a difference exporting it as an assembly instead of as a part. An assembly export will maintain component names and also instancing.

~~2. STEP files do not contain physical materials or textures.~~

Scratch that!

Still, why aren't you working with components ?

@jeff_strater why aren't body names maintained when exporting?

Re: Step file import renames bodies.

kymC6Q8L — Sun, 31 Jul 2022 15:15:07 GMT

@TrippyLighting thats a good point.

let me see what i can come up with just using the components and not try to solve the edge case i see off the bat.

thanks

Re: Step file import renames bodies.

kymC6Q8L — Sun, 31 Jul 2022 16:08:54 GMT

@TrippyLighting

i tried but i immediately hit said edge case.

in the original fusion file i cant do a query against the component/occurence of "Squas Ball feet" `

occurrence.component.material

returns a none , as the 2 bodies have different materials.

The properties panel in fusion also will not show any material of physical properties due to the difference in materials

foot_bridge is polycarbonate bronze & rubber_ball is rubber 80% .

these 2 bodies in the exported step file , when imported in to fusion get given the default steel material.

Since these 2 materials are quite different from the steel, the resulting mass is quite different.

The step file doesn't seem to have a concept of materials which is fine, but if i knew the names if could import a material mapping and assign them correctly.

Any other ideas are super welcome, thanks.

kym

Re: Step file import renames bodies.

Steven_Gao — Mon, 01 Aug 2022 02:08:30 GMT

Thanks for sharing the problem. It is a Fusion issue and I have logged an internal defect(FUS-110088) for development team to track it now.