Originally Posted by n0c7
It takes alot of practice to get good at cutting in to edges, but you'll get better results and actually save time and money.
Totally agree, but you don't have to be 100% perfect. Even seasoned pros get paint in weird places sometimes; even if everything is taped... it is a liquid after all.
When I started on a painting crew, the first thing they told me was to always carry a putty knife. Shortly after that, they told me to always carry a moistened rag when cutting (not a bad idea when rolling either).
If you slop a little paint where it shouldn't be, especially on wood, just wrap the moist rag tightly around the putty knife blade and gently (but with pressure) scrape off the stray paint. The rag picks it all up perfectly.
The only trick is to do it instantly
, or the paint starts to bond. That's why you need to have the rag on hand before you even start.
Oh, and of course make sure to use a new part of the rag for every cleanup.