Janey, I knew you would get it.
The feed dogs are short. There is nothing to feed until after material has been through the needle. The Singer works because even the short feed dog piece goes under the needle. The fabric only moves if it is over the feed dogs. If I had been using a wider Zipper foot... Maybe wide enough to go over the long teeth it might have been just fine. In the picture, you can't see the feed dog under the foot but it is just like the one next to the foot. The other long feed dog is not under the foot at all. See where the needle goes compared to the feed?
Thanks everybody class dismissed.
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Last edited by miriam; 03-22-2017 at 07:32 AM.