Washable glue washes out, it's not really a glue, just dries stuck to whatever it's on. I don't spend much time glue basting. I squeeze out squiggle lines on the batting and smooth the quilt top to the batting. I haven't used anything but glue for basting in over five years. I use it for applique now too, no need to fuse if I'm stitching around it. Once dry the applique isn't going to move or pucker.