one thing that I only touched on in passing is the importance of gloves. I'm only going to list a few of the reasons to wear them, but honestly they should be enough for any body.
1 palytoxins see this thread about palytoxins for an explination
https://forums.saltwaterfish.com/t/245173/the-truth-about-palytoxins
2 super glue see the glove picture way above. (not to mention I have glued my hand to rocks before, this is NOT fun)
3 bacteria, all corals host many types of bacteria, the slime coating on the outside of corals is the IDEAL breeding ground for them. bacteria like Vibrio and pseudomonas (the bacterias that can cause life threatening diarhea, not the way I wanna go out) even when wearing gloves washing your hands and forearms after is important.
4 bristle worms, most of us know how irritating a fingerload of spines can be, to those that are allergic it can be quite painfull. they do hid in and amonst your rocks so at anytime when your handling rock they could be looking for a way off the bumpy ride.
5 soap residue, oils, chemicals, present on your hands, there is a chance anything on your hands could potentially hurt your coral, since we are trying to make more why risk it.
this is just a few reasons, though there are more like, if you slip while cutting with a razor, the rubber glove, as the blade penetrates it, wipes some of whatever is on the leading edge of the blade back (kind of like a squegee). so palytoxins or bacteria have less chance of penetrating as deep into the cut, making it easier to clean out. I know I sound like a paranoid coot but its just basic hygene and awareness.