Quote Originally Posted by hotfuzz View Post
So the new question - does the blade loose sharpness because of the bad metal or badly set edge ? Or maybe something else ?
Yes, yes as can bad stopping, bad shaving technique, overhoning,,,

Usually, this is why it is highly advised to start with a pro-honed razor and learning how to 1.) pre-shave, 2.) lather properly 3.) proper stropping 4.) basic shaving techniqe.

There's more than enough challenge with these four items without throwing in a host of other things to learn.

ps-I can't tell from the photo whether the razor is bevel set or not.