I have a viking lily, and a Janome 6500 and still can't get it to work. Frustrating!!!!

Put one of the threads twisting to the left for the top thread and twisting to the right for the bottom thread and it should have the correct tension for both. It has a different look to a double stitch and is very good for top stitching.

I have used the needle, the 2 threads need to be threaded different directions like the bottom hole is threaded the same way you thread your regular needle the 2nd needle should be threaded the opposite direction and when you get to your needle the last loop before should not be in the slot, that thread goes in the top hole, when you start to sew hold all 3 thread and give it a tug it should sew right. I hope this helps.

Nancy's Notions has a very good video on how to use the 2 needles. Check it out.

Thank you Jane3. Will check out Nancy"s Notions

good info to know..I just ordered mine from Joanns as they were out of stock earlier this month! Will watch the NN videos as well!