Reply To: What does SSF mean please? Shop › Forums › HDF Forums › Chat Forum › What does SSF mean please? › Reply To: What does SSF mean please? August 22, 2020 at 10:26 pm #1480 VeenaModerator Points: 1,327 It is also very nice for backstitching or when you want to add some definition to your stitches without thick outlining. You need to login in order to vote