Display full version of the post: Lofting problem

Mali Zeleni
06.09.2014, 16:36
I prepared closed profiles for lofting, but I encountered a problem. Can somebody tell what could be the problem?Here are some picture illustrating the problem:Profiles in red denote the place of irregularity in the lofted 3D solid.Thank you for any help.

John Connor
06.09.2014, 18:16
A copy of the drawing would be needed to troubleshoot the problem.

Mali Zeleni
06.09.2014, 19:57
Thank you John for your answer. Here is the file with the drawing:uploads/497931/VL_za_krmenu_protustatvu_-_2.dwgIn the meantime I found out that the closed profiles are not of the same type. There are polylines (green), splines (yellow) and 3D polylines (blue).In the next step I added one profile on the place where the solid has discontinuity in the form. The first blue line, lower. Also, I started to loft from the top (!?) and the form was better.On two places I have the irregularity in the surface. I don't know yet, how to solve this problem.

Mali Zeleni
06.09.2014, 21:02
If I avoid critical part of the solid it looks fine. Now must find the way how to close the gaps.

John Connor
06.09.2014, 22:18
I guess you aren't going to upload a copy of the drawing.  OK.  Good luck.

Mali Zeleni
06.09.2014, 22:19
If I use each third profile solid looks much better. Also the geometry is not accurate as it can be.

Mali Zeleni
06.09.2014, 22:21
[QUOTE=John Connor]I guess you aren't going to upload a copy of the drawing.  OK.  Good luck.[/QUOTE]Yes, I uploaded the copy of the drawing in one of the previous posts (at 20:57). I will check if I can open it.P.S. I checked: it is possible to open the drawing.

Mali Zeleni2014-09-06 22:26:50

Mali Zeleni
07.09.2014, 21:43
I refined the geometry and the 3D solid looks better.I still have two places on the solid which should be put in order.Is the lofting bad approach for such body? I see that only one surface is not good: all surfaces located in one plane are OK. The flow of lines on curved surface seems to be "drunk".Here is the copy of the drawing:uploads/497931/VL_za_krmenu_protustatvu_-_2_-_Copy.dwgI thank for each answer.
Mali Zeleni2014-09-07 21:59:04

John Connor
08.09.2014, 12:24
Looks like you are getting helped over at CADTutor so there is no need to continue the conversation here.

Mali Zeleni
08.09.2014, 13:26
[QUOTE=John Connor]Looks like you are getting helped over at CADTutor so there is no need to continue the conversation here.[/QUOTE]Consequently, because I am the member at CADTutor forum, there is no need to be the member of this one. Right?

John Connor
08.09.2014, 14:34
[QUOTE=Mali Zeleni][QUOTE=John Connor]Looks like you are getting helped over at CADTutor so there is no need to continue the conversation here.[/QUOTE]Consequently, because I am the member at CADTutor forum, there is no need to be the member of this one. Right?[/QUOTE]That's entirely up to you.  No one is suggesting you leave.
John Connor2014-09-08 14:35:10

SEANT
09.09.2014, 09:54

I suggest isolating loft operations to just the pertinent geometry.  Extend the geometry as needed to create a surface large enough to slice a solid made from more basic (Box) primitives.
SEANT2014-09-09 09:55:25