Welcome to the Quilting Board!
I was told a couple of years ago that the "whiter" side should go to the back IF it is light fabric. Other than that, I just throw it in there. lol.
Life is not a movie. No one is going to yell "CUT" when you make a mistake. - Anne L. Fulton
Oh, and both sides are white cuz I get the warm and white..
The dreaded bearding. I think it may have to do with your needle because I use Warm Company products in almost all of my work and it has NEVER bearded on me. Hope you get it resolved.
Life, Liberty, and the Pursuit of Fabric!
Is is almost impossible to eliminate except by using black batting on dark fabrics.
Could there be a burr on the needle?
Are you pullling the fabric to taught as you move it around under the needle?
Try using a top stitch needle 90-14. Good size eye that prevents pulling on the thread as it moves through the material and can pull the batting with it.
Hope this can help some.
no act of kindness, no matter how small, is ever wasted. Aesop
I longarm quilt but I find I have no bearding problems with the right size needle for the thread (as mentioned previously) and Quilter's Dream battings.
APQS Millenium Longarm with Intelliquilter
Several companies sell black batting just for this reason...