Rhino shows me not naked edges, STP files doesn´t

Rhino
1

Hi. I prepared a model in Rhino to export to SW. The file does not show any naked edge. I exported the file from Rhino to STP. When I open the STP in Rhino it shows naked edges.

I am not sure if this has to do with the export options. Do you know how to solve this issue?
Thank you

2

it depends on each case but check the edge tolerance before exporting.
if the edge tolerances are too big. they could break later.
in other cases could be just the conversion.

2 Likes
3

Hello - if you select the original object in Rhino and run the What command, what does that tell you about the edge tolerances ?

-Pascal

4

Hi ! Thanks so much for helping!
It says
Edge Tolerances: 0.000 to 0.000
median = 0.000 average = 0.000

The whole dialog box says this:
Geometry:
Valid polysurface.
closed solid polysurface with 96 surfaces.
Edge Tally:
2 seam edges
16 singular edges
230 manifold edges
= 248 total edges
Edge Tolerances: 0.000 to 0.000
median = 0.000 average = 0.000
Vertex Tolerances: all smaller than 0.000001
Render mesh: 96 meshes 16834 vertices 16371 polygons
Created with quality meshing parameters.
Adaptive SubD meshing density = 256 mesh quads per SubD quad.
Analysis mesh: none present
Geometry UserData:
UserData ID: 774629CC-1296-4d9b-8616-F6C9CE2F70E6
Plug-in: Rhino
description: BrepFilletConstructionData
saved in file: no
copy count: 2

5

Any idea how to check that? and fix it?
Thank you

6

there is a test command called _testMarkOTEdges which will make dots indicating edges which are far from file tolerance. in that case it doesn’t seem to be the problem. maybe is just for the conversion.

7

Hi Bruno - can you please post the Rhino object or send to tech@mcneel.com, with a link back here in your comments?

-Pascal

8

Hi! Unfortunately the file is work related and can not share it…is there any other thing I can share that would help you that is not the file? I imagine not…

9

Just a guess but how far from the origin are the objects?

What happens if you save the model as a .3dm file and then open that file?

Does anyone know the precision used in the STP file compared to a .3dm file?

10

When I open the 3dm and run the naked zoom it says not naked edges.
The object is in the origin 0.0