If you are ripping with a short fence (as one is supposed to do) then the work is guided both by the fence and also the riving knife. As the plate for a 1.7mm kerf blade is likely to be somewhere around 1 or 1,2 mm, a knife of ~ this thickness does not seem man enogh to control the passage of the timber unless it is very, very, thin. It does not seem very appropriate to use a blade that thin on a table saw for ripping. Surely intended for portable tools or low powered mitre saws? A blade that thin would also be prone to flex and grain follow - could be interesting with its corresponding thinny riving knife???