Announcements
Autodesk Community will be read-only between April 26 and April 27 as we complete essential maintenance. We will remove this banner once completed. Thanks for your understanding

STLConversion of STL data to STP data

art_of_takumi
Participant Participant
357 Views
4 Replies
Message 1 of 5

STLConversion of STL data to STP data

art_of_takumi
Participant
Participant

I am a cerebrovascular endovascular surgeon.
I am currently converting cerebral angiography images to ziostationSTL data and
and create a 3D cerebrovascular model.
My question is whether it is possible to convert STL data of cerebral blood vessels into 3D CAD information.

Cerebral blood vessels range in size from 1 mm to 4 mm in diameter.
The volume of STL information is about 5 MB.
It would be helpful if it is possible to convert to .STP or other modes. Anyone can give me some advice. Thank you in advance.

1 Like
Accepted solutions (4)
358 Views
4 Replies
Replies (4)
Message 2 of 5

sutherland-
Collaborator
Collaborator
Accepted solution

Hi @art_of_takumi 

 

It is possible, but the process can be challenging and time-consuming, due to the small size and intricate nature of the blood vessels.

One option for converting the STL data is to use the Convert Mesh command within Autodesk Fusion 360, which converts the STL data into a solid body. Once the data is converted, you can then use the features and tools in Fusion 360 to edit and manipulate the solid body as needed.

 

Another option is to use a specialized software for medical or biological data processing, such as Amira or 3D Slicer, to process the data and convert it into a format that can be imported into Fusion 360.

It's also important to note that the resulting CAD model may not be highly accurate or precise, due to the nature of the data and the limitations of the conversion process. Therefore, the model may only be useful for conceptual or visual purposes, not for detailed analysis or simulation.

 

It's also important to note that some of the software's listed above may not support STL to STP conversion, but they may support other formats such as PLY, OBJ, VTK, etc. Therefore, it's important to make sure that the output format is compatible with the software you are planning to use.

 

In addition, you may want to consider the resolution of the input data, the volume of the data, and the complexity of the geometry, as these factors could affect the performance of the conversion process and the quality of the final model.


Please click on Accept Solution so other community members can see how to solve the issue.
Also, consider giving a Like to the comments that you feel helped you.

Best regards,
Level  sutherland-

Member
1 Like
Message 3 of 5

TrippyLighting
Consultant
Consultant
Accepted solution

@sutherland- I think you are dabbling it  a topic that is a bit more complex.

 

.stl is - as we know  mesh data. CAD software does NOT represent geometry in mesh format but in NURBS/BRep format.

A direct conversion of an organic mesh shape is such a terrible idea and will create very heavy BRep models. 

It is very common to  run into problems using the normal solid, or surface modeling tools.

 

Trying to use the solid combine tool to join two such bodies is very error prone. There are technical reasons for that!

 

A better method might be to re-mesh the .stl file into a quad-mesh, import eh result into Fusion 360 and convert the quad mesh into a T-Spline and then BRep. 

 

@art_of_takumi we need to see a screenshot, but an example file (original .stl. or .obj) would, likely serve the purpose much better. Also, can you elaborate what you want to do with the end result ?

If this is for 3D printing, or visualization only, Fusion 360 ( and really any CAD software) might not be the best tool to accomplish the task. 


EESignature

1 Like
Message 4 of 5

art_of_takumi
Participant
Participant
Accepted solution

スクリーンショット 2023-01-15 9.52.30.png

0 Likes
Message 5 of 5

TrippyLighting
Consultant
Consultant
Accepted solution

That is a quad mesh, which, given the right conditions can be converted into a T-Spline.

One of these right conditions is that the mesh does not self-intersect.

 

Can you eleaborate on the purpose of the exercise ?


EESignature

1 Like