After I get to the point of sewing the three layers together, I use 505. It seems expensive, but you know, it works like a charm. Who needs aggravation at that point, I have done what I could in piecing it, that to try and save money at this point is kind of self defeating. And maybe asking for a problem. Now, on the other hand if there is a product out there you can use and it does not cause trouble, well I am all for that. Interested in what others have to say.