“A white plastic eraser is a very strong, stiff eraser that’s great for removing highlights. It’s like a bulldozer that will just blast right through the charcoal. The white plastic eraser has a very blunt shape so it’s best in the beginning parts of the drawing, when you’re trying to block in a very large area of highlight. It’s not very good for doing subtle adjustments. You’ll want to use a kneaded eraser for that.
You have to be really physically aggressive with the white plastic eraser and, you have to press really hard. A lot of people do this with their eraser and, they think that their eraser doesn’t work, but actually you just have to put serious muscle behind that eraser to get any kind of result. If you’re drawing board isn’t shaking, you’re not doing it right.
Even though your white plastic eraser is going to get really dirty, sometimes it’ll turn totally black, there’s no need to clean it. As long as you press down hard enough with the eraser, it’ll work just fine.”