There are a few different feet so let’s make it simple:
PIPING FOOT FOR 7mm machine models. Part Number: 200314006
PIPING FOOT FOR 9mm machine models Part Number: 202088004
PIPING FOOT FOR ELNA SERGERS – there are few different ones for different model sergers so please check with your local ELNA dealer who can advise you what is available for your specific ELNA serger model. This foot allows you to insert piping into a seam AND finish the seam with a serged overedge at the same time. Very useful in many applications.
Here are some step-by-step pics and video for making & inserting piping using the Janome/Elna piping foot:
Why are there 2 grooves under the foot? That is because you can make double piping or welting with this foot…..but that is for another day!
AND, of course, you would use this same piping foot when you insert the piping into the item you are making….pillow? dress? skirt? the list is endless.