Blade rotation?

[Johnnie Walker]

I noticed my derby blade is numbered 1-4 on 2 of the corners top and underside? Am I supposed to be shaving with 1 side then turning the blade upside down after a few shaves? This DE stuff is so interesting!

I searched the forums but could not find this out.

JW

 

[luvmysuper]

This is, I am told, for quality control at the factory.
Just put it in and shave with it.

 

[vitaman]

this is, i am told, for quality control at the factory.
Just put it in and shave with it.

+1

 

[SRock]

Ignore the little numbers. No spinning, no flipping. Just drop it in and use it.

 

[Stubblefield]

Since I toss Derbys after one use, it is never a problem.