Loft is a complicated operation, and from what the images are showing, probably "number of segments" of the two wires don't match, so the operation is not doing " a smooth surface", I don0t know exactly the internal algorithm but:
Thanks, some very good material, I think I'll go through it a couple more times to try and understand more of it. Loft is new to me. But I guess by adding the extra cylinder it wants to map it's segments onto the B-Spline segments which is then causing an unsual vertex/mesh.
I kind of get the impression more knots may help but they need to be evenly spaced.
So is the issue that the triangles are too coarse as in the OP of this thread?
It's more the mesh is very random and can be pitted to quite a large degree. I don't think it happens if I unionise a shape the full height of the B-Spline sketch, in my photos the cylinder is small so I think that it creating unsualy connections or tugging on the segments in the B-spline (?). I might be wildly out on this.
The issue I get can be seen better on the CURA splicer below, I'm expecting a smooth curve but the mesh is very pitted.
- Screenshot from 2022-11-14 15-23-53.png (234.96 KiB) Viewed 2176 times
Here is a comparison, I want to see the image on the right.
- Screenshot from 2022-11-14 15-29-09.png (312.81 KiB) Viewed 2176 times
Thanks.
Code: Select all
OS: Ubuntu Core 20 (ubuntu:GNOME/ubuntu)
Word size of FreeCAD: 64-bit
Version: 0.20.1.29177 +233 (Git) Snap 245
Build type: Release
Branch: tag: 0.20.1
Hash: f5d13554ecc7a456fb6e970568ae5c74ba727563
Python 3.8.10, Qt 5.15.3, Coin 4.0.0, Vtk 7.1.1, OCC 7.6.3
Locale: English/United Kingdom (en_GB)