0.1mm seems awfully thin for a double edged blade.
It's also unreasonable to assume they will stack anywhere close to perfectly.
My guess is you're off by at least a factor of 20.
While true, 1 blade a day for 120 years is also off by a factor of 20 in the other direction.
Number came from Feather
I already covered the "don't stack perfectly" thing, but the vast majority would still fall flat.
0.1mm seems awfully thin for a double edged blade.
It's also unreasonable to assume they will stack anywhere close to perfectly.
My guess is you're off by at least a factor of 20.
While true, 1 blade a day for 120 years is also off by a factor of 20 in the other direction.
Number came from Feather
I already covered the "don't stack perfectly" thing, but the vast majority would still fall flat.