I disagree with your interpretation here. You are not polishing the striation - moving up a grit will still remove metal, it just takes longer. If you have set a bevel at 1000 grit then the usual progression would be to double the grit until you are happy - let’s say finishing at 10k. However, you could go straight to the 10k after the 1k and end up with exactly the level of polished bevel and edge as the progression - it would just take far longer.
When the 10k grit is no longer removing metal, the scratch marks are 10k scratch marks - no longer the 1k that you started with and this applies at the edge just as much as the bevel, therefore your comment that you are polishing a deep straition is wrong in my opinion.
I do not think we disagree too much. It is just my terrible way of explaining my self
. Polishing the striation is probably a bad description. Even finishing stones in the 8-10k rang can remove allot of material, and thus be capable of more then just polishing.
Part of the problem when doing large grit jumps i knowing when you have done enough to erase the deeper scratches. The bevel will look like a mirror long before the apex is fully refined. Gradual refinement usually yield better results, partly because there is a benefit from the particle hitting the apex, in addition to working on the bevel flat.
Here is a test i did a while back. On this razor you have a chip in the edge that i discovered a little too late. I was testing what a large grit jump did to the edge, and how well even a fine grit stone removed a micro chip. The edge after the 8k looks like a mirror under a loupe. The chip will not be visible even with a 60x loupe after the 8k, but might still lead to issues later. After the 16-17k all the striations are removed from the 8k, but the apex is not refined. It just gets to thin and starts to fall apart if you continue on that stone. JNAT to the rescue. The slurry is able to refine the apex without damaging it.
GS7 2k striation
GS7 1.2 (8k). Now i found a chip in the edge. The striations from the 2k is more or less gone. The sensible think would be to go back to the 2k, but i wanted to see what happened if i moved to the 0.85 (16-17k). One more "big" jump.
GS7 0.85 micron. Now the chip have become smaller, but the edge is beginning to get more fragile. It is beginning to get a little rougher on some parts of the edge.
JNAT with light tomo slurry. The chip is now more or less gone. You will not notice this during a shave. More work with another slurry would probably clean up the edge more.
I now inspected the blade and found a small microchip in a different part of the edge. The chip is really small, but it is not a good sign. The last photo will show how little it takes just by doing 10 passes on TI white paste on balsa. This is in my opinion caused by the deeper striations from the 2k that was not visible before. This might have been avoided if i had put in a 4k or a 6k after the 2k. I am not sure, but i do not see this if i use smaller jumps in grit.
After 10 passes on TI white paste on balsa and leather stropping the micro chip is still there, but will not be felt during a shave. However, it is a weak spot in the edge that might brake off after a few shaves.