very handy Overlocker's Creative Sewing Guide RRP $25
The Janome 8004D overlocker is an affordable way to add an overlocker to your sewng room. Capable of all general overlocker functions, the 8004D is a 4-thread overlocker with differential feed and a nice smooth sewing action. Nothing sews a neater seam than an overlocker, and it is perfect for sewing stretch fabrics. The 8002D has adjustable stitch length and rolled hem function.