Respected FreeCAD developers, Please see the below link for cad viewer(mayo )based on Open Cascade. If similar cross section /clipping feature with solid section can be implemented in FreeCAD. It is be good to have feature. https://raw.githubusercontent.com/fougue/mayo/develop/doc/screencast.gif htt...

You are adding thread on tapered surface .

Your triangle profile is in tapered surface, modify it to go out of tapered surface to see the cut properly(correctly). Hope this helps.

You may be right about OCC issue. Able to complete pattern with nano error (10 nm).Please find attached file. Is there a way in FreeCAD / OCC coding that, if the calculation error is less than some threshold value(say :- less than 0.001 mm), it should follow topology ( merge points / surfaces ) inst...

Facing same issue with patterns.(both 0.18 and 0.19 FreeCAD).
File attached for reference.

Very Good work.

I saw your drawings pdf file . Just for information, what is the cost of Oneseater ?

Are you going to share your other designs , (three seater ) ??

Thanks.

Good model Dirk.

@Kunda1 :-
Explain why you didn't animate the model? (since A2+ has that capability):-

I do not find any thread for animation capability of A2+, if you can share any thread or link for A2+ animation, that will be great help.

Thanks.

Very Good work, looking forward for FreeCAD MBD workbench for all platforms . Thanks and best wishes for your work.

Amazing , impressive work

One try , seeing the image and assumed dimensions.

Used Macro File : -