I remember watching the owner of this club in Chinatown (NYC) cut rubbers on the blades the club sold and he did it with scissors and he did it really fast and it looked so easy. The cut was always perfect and it was very fast. At a certain point, because I was good friends with one of the guys who worked at the club, the owner and my friend started having me glue and cut rubbers when they sold blades. William (my friend who worked at the club) showed me a few things that made it easier.
In looking at videos on line with people cutting with scissors, I saw some interesting things to get around the handle. They were not what William showed me about how to get around the handle. The hardest part of cutting rubbers with a scissor is starting off, because when you start to cut, right at the bottom by the wing, the handle is in the way of where the scissors need to be. What I was shown was that you take the handle of the scissors below the handle of the blade. And until the handle is out of the way, you make little little cuts with the scissor. Once the handle is out of the way, the rest is easy.
Robert Chen was the owner of the club. I never got anywhere near as good as Robert of William at cutting rubbers. But, often Robert would cut rubbers for 10-20 rackets in a day. When you do it that often, you just get good at it.
I think, whether with scissors or any kind of knife, scalpel, box cutter, X-Acto, whatever, it does take a few times to get the skill so it comes out as well as most people would like. After doing it a few times it starts coming out pretty clean. [[There is no reason you can't order an inexpensive blade like the Yinhe Galaxy 896 and a bunch of Dawei 2008XP and practice a few times before doing it with more expensive rubbers like T05. 896 costs about $16. 2008XP costs $8. You get to practice 4x. You can try scissors and the knife and see which one is easier for you before cutting something more expensive. (That info is for Basmundo who I think may be nervous about cutting expensive rubbers when he has not cut before).]]
I don't think it matters what method of cutting you use. I think the scissors, initially take more skill to get the beginning of the cut to come out well. But once you get used to that part, the rest is really quite easy. So, I prefer scissors. But before I got shown how to use the scissors and get a good cut, I used a knife and felt more comfortable with it, because initially, it is easier that way.
In the end, all that matters is, you do it a little carefully until you feel comfortable doing it.
