since you are asking about water soluble stabilizer, i assume the piecing foundation does not need to remain part of the quilt.
if that's the case, try using very thin paper instead.
with a smaller than usual stitch length it should tear out nicely.
any itty bits left behind will not cause problems down the road.
go to the dollar store and look for the "newsprint" tablets in the kiddie or craft section.
__________________
- necessity is the mother of invention. lazy is the crazy aunt.
