These blades were each used for six, yes six, cuts - each cut was approximately 1 1/2 inches long, and the cuts were made at a normal speed and pressure (at least until the last bit of the last cut).
I was cutting the sandpaper I was provided by Judy, and using a set of wood blocks as guides. The wood guides are still in good shape. The paper is 180 grit and used for the manufacture (in this case) of a sanding mop.
The first set of cuts went well until about the middle of the fifth cut, then I had to start pushing a bit, of course by then I was obviously losing some teeth (on the blade). The last cut required a goodly amount of pressure - but it was not until I was complete with the sixth cut and pulled the project out that I saw the results.
I will say the blades held up, and the toothless area is actually fairly sharp, thus making the pushing through possible.
It was an interesting cutting experience to say the least. I must also state these blades were pinned blades at one time and I have no idea as to their age.
I am guessing the comments will continue - but now you know some more of the saga.
Stay well and have a decent day.
Al