Originally Posted by
QuiltE
Google works!!! ...... the black "plough" is like the edger you get on a 1/4" foot, except this one puts it in the centre to run in the seam line so you can SITD!
Keep in mind that every plough may look slightly different, but this will give you the general idea of what to look for!
Copied from
http://www.april1930s.com/html/stitc...ttachment.html
Thank you for the quick photo! Now I KNOW I don't have one, but certainly looks like I could USE one! SITD is hard for me, as I try to sew too fast!