EOU, in my understanding grinding direction may have substantial influence on the edge because the burr formation is different.
On Tormek grinder you can use both directions without any danger though grinding towards the edge is more frequently used because it is more aggressive and therefor quicker.
I have asked sharpening teacher Steve Bottorff why he prefers grinding away from the edge on Tormek and he told me that is because we get a larger burr, which can be detected sooner, assuming we will check it often during sharpening.
I have prepared a special flat platform which guarantees the same bevel angle for sharpening in both directions.
Jan
On Tormek grinder you can use both directions without any danger though grinding towards the edge is more frequently used because it is more aggressive and therefor quicker.
I have asked sharpening teacher Steve Bottorff why he prefers grinding away from the edge on Tormek and he told me that is because we get a larger burr, which can be detected sooner, assuming we will check it often during sharpening.
I have prepared a special flat platform which guarantees the same bevel angle for sharpening in both directions.
Jan