11-08-2020, 12:01 PM
OK, here are more results obtained with a DE razor blade (~30 year old Wilkinson sword):
In contrast to the knife, cleaning obviously doesn't bring any improvement here, but the cutting edge seems to be damaged after the 66 cuts (not visible with a magnifying glasss). With 100 cN thread tension, the required cutting force is slightly above 50 cN. At 150 cN and a new razor blade, it should be slightly below. So the results are as expected. What does this mean for the results with the knife?
In contrast to the knife, cleaning obviously doesn't bring any improvement here, but the cutting edge seems to be damaged after the 66 cuts (not visible with a magnifying glasss). With 100 cN thread tension, the required cutting force is slightly above 50 cN. At 150 cN and a new razor blade, it should be slightly below. So the results are as expected. What does this mean for the results with the knife?