Not sure what point you’re making Oliver, perhaps I’m missing something?
Btw, I haven’t watched the video, I’m assuming we’re talking about the dust expelled at the beginning and ending of a cut?
I am saying that I am happy with all of my plunge saws, including dust collection, and in my opinion the Mafell is the best designed, including dust collection but, the Makita is still my favourite plunge saw.
The amount of dust being expelled at the end of a cut, will probably differ, depending on the material being cut and it’s thickness, and motor speed and blade type.
I can’t give a scientific explanation or formula, I’d imagine it’s impossible not to get some dust at the end of a cut, unless the whole underside is enclosed but, then where would the blade protrude from?
It’s certainly not a problem or concern to me, I accept that in carpentry, joinery and woodwork, that I am going to see sawdust still, no matter how good and efficient machines have become nowadays. Obviously I would prefer to see as little as possible.
Expecting no sawdust in woodworking, is a little like a mechanic not expecting to see grease or oil occasionally?
I might actually carry out a full experiment at some stage but, from what I’ve seen the Mafell has the best dust collection.