I have to say your post gives me some relief. Here I am a guy, finding sexual satisfaction in being the dominant, doing these things you speak of. It has been causing me some worry as I thought I would never find a consensual partner for this type of thing. When you say it is related to the emotional release of cutting, that strikes me as a concern. I think engaging in this kind of behavior is safe as long as your partner understands your boundaries. Honestly, I am in the process of understanding my "fetish".