They did sell a straight-stitch monogrammer as I have th slant and staright monogrammer. I just don't have all the letters bar for the straight stitch one. There were 3 different ones as far as I can remember, one was called the deluxe Monogrammer for Vertical Needle zig zag sewing machines # V171278. This one used bar to creative the letters and it was the same as the slant needle. Then the smaller one had disk. I can't get to the monogrammer to give you the #, but the disk # 171288.
I have the instuction for these attachments. The slant & small one is at my other house.
email me,
[email protected] and I can share them with you.