I have some "fingernail" skews that are 60+ years old.
Long and shallow - shaving / cutting edges. But modern ones
are far blunter for heaver cutting.

Martin

Leo Lichtman wrote:
"Gerald Ross" wrote: (clip)
I tried 30 but they seem to dull just as quick and went
back to 35. (clip)
^^^^^^^^^^^^^^^^^^^
If I understand your measurements, a 30 degree angle is thinner than a 35.
Generally, a thinner edge is *sharper,* but more delicate--so initially it
will cut better, but dull more quickly.