My dogs nails are black, so it is really difficult to know where the quick is. I nipped it once, and that was a bummer. Now, I just cut the very point off, just a smidgen. I do not try to 'trim' the nails like you would do to yourself, by cutting them way back.
I have seen that Dremel idea and I like it. In the mean time I use my wifes old emory boards as well as some 280 grit wet/dry and finish up by sanding the nail tips for a while. Costs lots of dog treats to get cooperation.