Apologies if this has been answered before; I did a quick search and checked the FAQ but didn't find what I was looking for.
I've got an image I need to clean up the edges of and just carve off some stray pixels, but I'm not sure how to do it. The eraser tool is antialiased, but I need a sharp edge so I don't affect the color of the parts I'm trying to keep. I found a thread detailing the addition of antialiasing options in the layer blend ranges settings, but as far as I can tell that doesn't affect brushes like this. I'm not sure if I'm looking for a different feature or if I just set it up wrong, but in the end I haven't figured out how to get the effect I need. Any help would be appreciated!