You may have a
saw that requires a lot of work to get it in shape for sharpening.
I can take a very rusty saw and make if very usable. If you have
an old rusty saw and think it could be made usable here is what
to look for: Look at the condition of the teeth. If the teeth
are badly pitted, especially near the middle of the saw, it is
probably not worth fooling with. Pitted teeth near the end of
the saw where they don't get much use may be okay but still not
good. Pitting in the saw blade may be okay if not too extensive.
A lot of deep pitting in the blade is probably not worth the effort.
One broken tooth
won't kill a saw especially near the end. More than one broken
tooth near the middle and I wouldn't mess with it.
You may want to
save some bucks and remove rust yourself. Remove all rust up to
the tips of the teeth. Don't worry about between the teeth as
I will take care of that with normal sharpening. If you want me
to remove all rust, I charge $3 to $5 per foot of saw blade depending
on the amount of work involved.