Originally Posted by Blockhead
The foot stays in the ditch, whichever side the seam is pressed to. It works best if your seams are properly butted.
My foot is for a Pfaff, and it works really well. Don't know about other brands, especially generic ones, but I would assume they all function on the same principal.
Do you have the same luck on a thicker intersection? Say for instance many points meeting in the center.
I have a Viking. They have a new walking foot that has snap in feet, STID being one. I haven't bought it yet because it's over $100! I think about it, but when I consider how much fabric I can buy for that, the fabric always wins! :)