I came across a forum from PatternReview.com where the user 'rag doll' tells us how to stiffen chiffon to make bias tape. I had to share the recipe with you.
Just a caution. I didn't pretest this method on my chiffon before I jumped in, but I recommend you test this out before spending too much time on it or sewing it to a garment that you've spent a lot of money and effort on.
Bring some water to boil. You'll only need a half cup.
Make sure your chiffon is fully immersed in a bowl of warm water to soak.
While the chiffon is soaking mix together 2 teaspoons of gelatin with a 1/2 cup of boiling water. Stir to dissolve.
Add 1 1/2 cups of warm water to your boiling water and gelatin mixture. Stir to combine.
Remove any chunks of gelatin you may have in your mixture.
Squeeze the warm water out of your chiffon and add the chiffon to your gelatin mixture. Make sure the mixture completely covers your chiffon.
Leave your chiffon in the gelatin mixture for 15 minutes or until the gelatin mixture has completely permeated the chiffon.
Gently squeeze out the gelatin mixture from the chiffon and lay it flat so it can dry. I laid a towel on my kitchen table and put the chiffon on top. You don't want to have the chiffon vertical so the gelatin drips out.
Once dry you can iron, cut, and sew your chiffon as normal. The gelatin will wash out normally in the laundry.
I hope you enjoy! I'm so glad I came across this method and it elevated my finished shirt to have matching bias tape with the same drape as the rest of my fabric. I would love to see your finished creations. Feel free to share in the comments below, through a post on my Facebook page (SimplyKyra), or tag me through Instagram (@simplyartsykyra).