AboveTheBest
Plinker
Having a couple of chains is very good advice, but you should also pick up a round file next time you're at the store.
I worked cutting trees in the woods of Vermont (think Maine, but smaller scale) during the summers while I was in college, and all of those guys always carried a file on their hip. At least every tank of gas they would pull it out and "tweak" their blades, and it only takes about a pass per blade once you've got the hang of it. There are a lot of guys much better than me, but I can get a chain nice and sharp in about five minutes now with just a round file.
If you have an old chain laying around its worth trying just to get some practice.
I worked cutting trees in the woods of Vermont (think Maine, but smaller scale) during the summers while I was in college, and all of those guys always carried a file on their hip. At least every tank of gas they would pull it out and "tweak" their blades, and it only takes about a pass per blade once you've got the hang of it. There are a lot of guys much better than me, but I can get a chain nice and sharp in about five minutes now with just a round file.
If you have an old chain laying around its worth trying just to get some practice.