I generally shave with one side of the blade for 4 days, then flip the blade and use the other side for 4 days. I have seen several on shaving videos use both sides of the blade while shaving. Anyone else do this method and if so why?
I think he is saying he turns the blade over top to bottom.
Both edges daily so they get even wear. I also clean and dry the blade after each shave.
My merkur 180 seems to have differences in the sides to how the blade sits. One side, more of the blade is shown and I find that side to be better at doing the first pass and getting a closer shave. The other side where less blade is shown I use less often so I usually flip the blade after 2 shaves.
I think he means both edges. And yes, I use both edges while shaving. I just flip it every time I rinse (which I do after doing a "quadrant" of my face). I'd expecting using both sides while shaving is very common. I can only say what I do though...