I only make my buttonholes with a vintage singer buttonhole attachment, I have had the fancy machine one touch buttonhole I dont trust them. I will try and sent you a picture of the attachment. It should work on your machine and you can pick the button attachment up at thrift store for cheap. You need to find out if your machine is a low, high, or slant shank machine then buy the right buttonhole attachment for the shank.
It is an old dial and sew. There is no button foot. There is just a dial to change the feed dogs based on your measurements. I didnt measure well. I havent tried one on the Janome yet.
i have a singer fetherweight that belonged to mom. she has a botton holler that lookes loike that one but no directions for it how do i atatch and use it properly? can anyone help me......