|For those of us without an invisible zipper foot for our machines, I found a foot which works very well. Bernina makes a pintuck foot with three slots, #30, the slot is just right size to hold the zipper teeth while you sew.
I use the left pintuck slot and my needle position knob to do all the work. Basting is still important for me to check the position of the zipper and hold it firmly in place, so I use larger stitches and position the needle closer to the zipper tape. Then I change the needle position to the far left side and use a smaller stitch for final stitching. It came out perfect!
I cannot get a link directly to the picture of the presser foot. If you want to see what it looks like, click on products, then accessories, check the box for models 500-1630, then type in pintuck. It will take you to a page with all of the pintuck feet, click on the three tuck foot, #30.
Note: Els gives a wonderful tutorial with pictures on the sewingdivas blog for stitching invisible zippers in place by sewing the seam below before the zipper. This is contrary to many pattern instructions, but I get much better results-- no bubbles below the zipper.