Originally Posted by Tropical
I don't know what you mean by IDT. I love my Pfaff 1170 which I bought in 1997. I always lock my stitches when starting and to avoid the pull down, I start about a 1/4 inch in on the fabric and then backstitch to lock them. This alleviates the problem. I find this easier than using a start scrap of material.
IDT stands for Integrated Dual Transportation, if it is engaged the black plastic piece is hooked onto the back of the presser foot.