@Writers_Block : If you want to do a temporary "Nail to collision", you can use the "Vertices interactions". This function allows to create a nail during a simulation and release it some frames later. I want to make a video on this subject.

@tomyee : You are right, this is a new video to add to the list. I do not promise it for tomorrow.

@DaremoK3 : I make test to have a hidden-line view. This seems to work correctly.

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