>The English and others "over there" have another name for a serger but I
>forgot it. Something about the "edge" or "over the edge" What is it??
You mean the British? Or the folk in the UK? Whatever...
Comes in a three-thread or four-thread version. They're designed to cut
the fabric clean, overlock the edges and sew the seam, all in one
The three-thread version uses two threads for the overlock (blanket
stitch) and has the seam done as a chain stitch. The type you can pull
out from one end, if you've ever come across it. Much used in the
packaging industry. Not a bad thing in itself but better with knitted
fabrics and you do need to manually sew in the end of the thread to
The four-thread version uses two threads in a standard lock-stitch to
make the seam (usually in a "stretch" version of two forward, one back)
and the other two threads give an independent overlock stitch to oversew
the edge of the fabric and prevent it unravelling.
Both types have a vertical blade that slices the edge clean just before
the sewing plate. In the four-thread version this can usually be
disabled and these can also be used as straight sewing machines if need
To see both types of finished seam look at the inside seams of a fabric
shirt and the side and underarm seams of a knitted sweater (or knitted
fabric tee-shirt), count the threads used and you'll get the idea.
Both types are designed specifically to cut the fabric to size /as you
sew/ and I can't see either of them being a lot of use in kite design or
building, especially for a beginner. I may be wrong in that, of course.
Use by experts? Well, I've seen (mostly) women in factories turning
plain knitted fabric into a finished sweater in around a minute and a
half using one of these beasties. It used to take me about half a day.
I used to sell overlockers and sewing machines retail, by the way, so
that's where the info comes from.
Oh, and if you'd like to see the Pfaff dual feed system in action, take
a look at the video clip at:
and other parts of that site may be of interest as well.
Owner/Manager of Skyshots Aerial Photography - www.skyshots.demon.co.uk