I've actually been contemplating doing exactly that. For some reason, I never
got into saw sharpening, but it is on my list of things to look up... I know
I'll need a file and a saw set, but I want to do a bit of reading before I buy.
All I need is more time....

And I've got to wonder how a sharp saw will do cutting through modern sheet
goods (OSB and Advantec). From what I've seen, Advantec is really tough on
edges...

-J