i think the only important thing is that the batting is the same weight and content, so it sews and washes evenly. you wouldn't want high-loft attached to low-loft or poly to cotton. (i guess you could plan it so that certain spots in the finished quilt could be much poofier than the rest of it) :roll:

I really appreciate all the practical advice.

Thanks so much everyone.

I think I'm going to like it here.....

In my class I'm taking now, they have taught us to butt it together and zig zag stitch it together.

I have sewn leftover pieces of batting together using a needle and thread, double your thread and zig zag the pieces together by hand. Stitches don't have to be too close, your quilting will hold everything in place. May in Jersey

Hi, In my lessons here in UK we were taught to stagger the join by separating the two layers of the batting and cutting back the middle layers of each bit by about 6", and then laying them together so there is no noticeable join in the filling, which works well for me, it also means that you don't need to stitch the pieces together so firmly.

I just sewed batting together for the first time today. AWESOME. I learned that from this board. I was always too chicken to try. Thanks everyone for all the great instructions on how to do it. :D :D :D :D