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A less refined edge will last longer. The absolute edge is larger than a very refined one. I did a little experiment with .1 micron lapping film. I finished a razor and did 30 laps on the film....

I would think the edge is too refined and or your angle may be too high. If the angle is shallower and you still have trouble, I would hone the blade again, keep at the 1k or equivalent until it cuts...