Originally Posted by Rodney

I know what a serger is and that's about it. I've got a bunch of questions.
What are common problems with them and what do you look out for if you're buying one?
I know they have a set of knives to trim the fabric. Can they be sharpened if needed and can replacements be found easily?
Also are needles easy to find and are they the same as regular sewing machine needles or are they different?
Thanks,
Rodney