In a large bowl, stir together the corn starch and flour until they're evenly incorporated.

In a separate large bowl, or even the bowl of stand mixer, add the gelatin water, chia seeds, and cold water.

Slowly add in the corn starch/flour mixture, steadily stirring until the ingredients have come together and a dough like consistency has been reached. You may or may not need to add a bit of extra cold water depending on your desired consistency.

Refrigerate the dough overnight so that it 'sets'. It will soften as you play from the heat of your hands.