The Gordon surface performs without errors in this FC version compiled yesterday : OS: Manjaro Linux (KDE/plasma) Word size of FreeCAD: 64-bit Version: 0.22.0dev.36350 (Git) Build type: Release Branch: main Hash: d3e790cf21ffeb564e2cc582451573198ff3d0ba Python 3.11.7, Qt 5.15.12, Coin 4.0.2, Vtk , O...

@Chris_G, this is a helpful illustration of FreeCAD interpretation. Is this the Sketcher workbench? (I am reasonably conversant with the FreeCAD Python API, running it as a standalone geometry engine, but less so with the GUI. Are the images you show generated by the stock FreeCAD GUI?) It is the G...

When I try converting FreeCAD's native ellipses to BSplines, rational and non-rational, I get closed, but non-periodic BSplines. Yes, i have always found this strange. You need to explicitly set periodicity with : bspline_curve.setPeriodic() and eventually raise the continuity at join point with : ...

Info : You can attach step files directly while writing a message. Here is how the BSpline ellipse appears once loaded in FreeCAD : ellipse.jpg I don't know the STEP format, so I don't know if something is wrong. Additionally, here is how an ellipse is converted to rational and non-rational bspline ...

@TobyB Would you have an example file to share ?

Et puis également, il est préférable de construire les surfaces successives en s'appuyant au maximum sur les arêtes des surfaces précédentes. Dans le fichier ci-dessous, les surfaces génèrent un solide valide. En partant de l'object Surface, une première surface réglée est créée à l'aide Sketch12, p...

You're talking about the addon manager ?
I don't know what's wrong. I simply update the package.xml file for every new version, like i have always done.

Roy_043 wrote: ↑Fri Mar 08, 2024 2:41 pm Probably related to:
https://github.com/FreeCAD/FreeCAD/pull/12714

Thanks for the link. I missed that.

Piero69 wrote: ↑Fri Mar 08, 2024 2:14 pm when i run mapped sketch command i get followings error:

It should be fixed in Curves 0.6.24
Please give a try.

Here is another solution, also with Curves workbench : - select the 2 faces of the solids you want to join. - activate the BlendSolid tool - adjust the Continuity properties of the BlendSolid to 0 for linear join - set the fuse property to True It is parametric, but the 2 input faces must have the s...

Right-clic and Back.