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Incomprehensible open edges (by liujiang)
Please help me check the area marked by the red circle. What causes the edges to appear as open-type edges after exporting to STP format?
Sun Sep 28 2025, 21:03:05, download attachment 未命名10.slvs
Incomprehensible opening edge image (by liujiang)
Sorry, this is a picture. I forgot to upload it before
Sun Sep 28 2025, 21:18:02, download attachment 6FD3665645450F3025723833B72152AD.png
(no subject) (by Sam)
Hi liujiang,

I'm on Linux (Debian 12) and using their repository package, which is 3.1. You seem to be on Windows, what version of the software are you using?

It may give someone else a clue what could possibly be causing the issue.

Also, the edges that weren't showing for me were on the opposite side of the model when I opened it(see attached image), and then after just saving the file the lines showed up. But, that doesn't seem to be the cause, as I can open your original as well now and the edges show up. So, it seems to be an intermittent issue.

Is it still persisting for you?
Perhaps someone will get time to look into it if it can be reproduced reliably.

Sorry I can't help more than that, but at least you know what it looks like on someone else's system.
Fri Oct 3 2025, 20:51:48, download attachment 2025-10:03:02:.png
(no subject) (by Sam)
Here's an image with the edges showing.
Fri Oct 3 2025, 20:52:39, download attachment 2025-10:03:03:.png
(no subject) (by ruevs)
Probably "g008" and "g00c" which "touch, but now quite" are not handled properly by the NURBS engine.

Ding "force NURBS surfaces to triangle mesh" on "g00c" "fixes" the problem, but I do not recommend it unless it is required.
Mon Oct 6 2025, 09:06:24
Clean Drawing (by Aster Iks)
You'll find here a clean version (the naked edges on g01f-extrude are fakes - use "analyse-show naked edges" to suppress them).


Solvespace version and parameters in use to draw the piece :
- version 3.2~8f37db9c on Debian Bookworm
- chord tolerance : 0.01
- max piecewise linear segments : 20
Mon Oct 6 2025, 11:34:44, download attachment Clean.slvs
(no subject) (by liujiang)
Hello Sam, I did not continue on this issue, but instead changed my approach to achieve my goal. Thank you all for your replies.
Wed Oct 8 2025, 20:44:53, download attachment 未命名10.slvs
(no subject) (by liujiang)
The version I am currently using
Wed Oct 8 2025, 20:46:31, download attachment QQ20251009-083956.png
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