I have a Brother that's at least 10 years old, and it works just fine. I use it to hem denim pants, and while it can sew through two layers without a problem, it can't sew through more thicknesses (e.g. when the inseam is folded over, it can't sew through those two layers).
For sergers, it depends what sort of materials you want to work with. If you're going to use a lot of stretchy fabric, such as jersey knits, or if you sew with something that frays easily, such as polyester, and you want to overcast the seams, it would be worthwhile, but if you're mostly using woven, non-stretch fabrics, you won't need it.
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Date: 2012-03-19 08:40 pm (UTC)For sergers, it depends what sort of materials you want to work with. If you're going to use a lot of stretchy fabric, such as jersey knits, or if you sew with something that frays easily, such as polyester, and you want to overcast the seams, it would be worthwhile, but if you're mostly using woven, non-stretch fabrics, you won't need it.