thanks for the responses. i've got successfull with some other blades earlier to get them in work. so i rather to say i'm not beginner niether advanced but still learning. : )

for the video, i watched it just after wrote on here. the frown in the bevel actually is erased, there is just some difference between the point and the heel (might be 1 or 2 mm of difference) so i was just wondering if that can be the reason of the sharpness difference for the point and the heel. i say that because yesterday night, when i was trying it on my arm hairs, i realized the point shave better then the heel. but even the heel shaves just i had for one or two time it did not cut some hairs but i'm not sure if this is because of the surface (i don't have flat arms ^^ ) or because of the bevel.

i will go on with the coticule this afternoon, and shave my beard of 2 days tonight. and write here a feedback if it's well or not.


thanks again guys