Thank you for your response.
It was a question by one of my students (I'm a lecturer at the KU Leuven (Catholic University of Leuven) in Belgium).
I've now suggested a work-around for my student and made a video about it
Any suggestions are still very welcome.
I hope everyone here stays safe and sound during this Corona crisis.
Nice. You could make this even easier to insert by designing an interface for the T-slot nut, which will save a lot of time when placing your constraints.