How to delete a large edge on a blade ?

[Oustoura]

Hi everyone,

the title may not be so clear because i was not sure how to name it. so here a pic for exemple of it




sometime, it arrives to me have a large bevel because of frictions, when it's an old razor and if i did not find the right angle to hone. once that arrives, it's just annoying to see that. i would like to know if there is any way or tips to delete this large bevel from the blade by using sandpapers or a dremel (with what kind of heads of dremel?) for those who are not expert ?

if you know its way and tell me, i will be appreciated. or even a tuto. i like these kind of blades, even i love them. but when it arrives while i trying to find right way to hone them, i found myself with big bevels which are very ugly to see and know you will keep that.

thanks in advance for your help guys...