I don't know if it's relevant but I see that the "DN200" clamps have a defect that is visible on the screen. they are not centered in relation to the tube held by them.
It would be better to use an axis in the center of the pipe.
Another thing that looks more like your problem, I get this message when I use a 3D view like in your video.
I no longer have the message if I have my ASM is strictly parallel to plane 1 or 2 or 3 depending on the 3D line I draw. In other words, I see that you don't use the constraints along X, along Y, etc. It seems to me that since you don't have diagonals but only parallels to X or Y or Z. It might be good to work parallel to the screen and not in 3D space.
I don't know if it's clear but to avoid this nutty message: personally I proceed as indicated. What do you think???
If I were you, I would enable the display of small constraint icons when selecting an entity.
Indeed SW tells you that it has added automatic constraints. Maybe these are the ones that block you. Also look in tools / sketch settings: sometimes a parameter jumps here and it quickly becomes annoying
Certainly my sketch is entirely constrained on xyz, I didn't know that it was feasible to make your own scu.
Only at this stage of progress of the 3d solid sketch no longer accepts to constrain connecting lines on the plans even if everything is well constrained on the 3 axes and exactly side and parallel
There are no settings that change the operating state.
The clamps are well constrained on the axes
I've been trying to work in these conditions for a long time but it's getting worse and worse.
Small video of an attempt to modify my chassis, personally I don't understand what it does anymore
This is a problem that I also encounter quite often. Obviously SW doesn't know how to support a 3D sketch (and even 2D) that is a little too busy.
I apply 2 methods: - free the sketch from a few constraints, add my entity and, possibly, put constraints back; - If that's not enough, I get around the problem by trying to break down my sketch into several others.
In the end with this design pattern, if you want the sketch not to be buggy, it would have to be fully isostatic: if you start to have constraints parallel to a line / plane and following X at the same time on a line, usually at the first solidworks digests it well but after X hyperstatic constraints it cracks and gets wrong for nothing.
The easiest way is probably to cut the sketch into several sketches because the fewer strokes you have, the less likely you are to put hyperstatic constraints.