Just today I tried a double needle for the first time, to hem a pair of men's casual slacks, and it worked beautifully because the underside won't be seen. I'll try it again in quilting my bowl cozies (microwave bowl holders) because I quilt each side separately before assembling. It could work well in a bag or tote that will have a separate lining. So yes, the underside is ugly, but if that won't show, try it, because the double needle makes a perfectly aligned double line that can rarely be matched by sewing a single line twice. But don't try going around any curves unless you're wanting puckers!
Onebyone, I just read your post about using a double needle for echo stitching with only one needle threaded, and I will definitely try your brilliant idea!
Last edited by suzanprincess; 02-08-2016 at 10:41 AM.