I have just been reading the Debbie Bliss book for beginning knitting and she says that ribbing is normally done on needles two sizes smaller than the main body of the fabric. e.g. rib on 3.25mm and stocking stitch on 4mm needles.
So if I am doing some knitting using chunky wool which I am going to using 10mm needles what size needles should I use to do the ribbing. Would 7mm be ok?
Hope that makes sense.