old fashioned recipe for spray starch;
Argo corn starch or other corn starch, you need to experiment with it, that is how stiff you want your starch
try a couple of tablesoons of cornstarch with a cup of water, stir well, place in a container that will fit your item(a 2' square, for your experiment) let it dry, and you have it.
this also has been used for the thread crocheted items.
I am likew you, I hate to buy the starch and doesn't halfway spray or the sprayer itself breks. oh and if you get an old fashioned sprayer, which probably can't find any more, can spray your item and iron it, or just lightly steam your item
from the link above
Frebreeze? hmmm, gotta try that!
12 oz water
3/4 tablespoon cornstarch
3 drops lavender essential oil
Mix well in a measuring cup and pour into a spray bottle.
All of these are great to try, and I plan to do this afgain, so much cheaper too. and does just as well as the store bought spray kind.
SusannahG that recipe is the one I think my mom used ! thanks for the info,