The gelatin in Jell-O® is what enables you to create all sorts of different shapes. I’m sure you’ve all heard of gelatin, but what exactly is it? Gelatin is a structural protein called collagen that is found in many animals, including humans. In fact, collagen makes up nearly one third of all protein in the […]

The cold foam will be ready to demold in approximately 30 minutes. Because cold foam is not as soft and stretchy as foam latex, care must be taken when opening the mold so that you don’t tear the appliance or separate the outer skin from the inner foam structure. The formula for Kryolan® cold foam […]

Let me reiterate the importance of working in a room with adequate ventilation and a respirator. The release agent alone is reason enough for it. Whew! Just as for foam latex, make notes of what you do for each batch. The more you use cold foam, the better your results will be. Before beginning, place […]

If you are using a stone mold that has been thoroughly dried, it must be sealed to make it as nonporous as possible before applying the release agent. New molds or molds that have not been used in a while should receive a second coat­ing of release. All coats of release should be thin and […]

The Kryolan® cold foam instruction sheet sug­gests working in a room temperature of at least 80°F (about 27°C). That might be a bit warm, but colder room and mold temperatures can cause the foam to fail occasionally. High humidity can also cause foam to fail; ambient room humidity and even wooden stir sticks with any […]

Cold foam is a two-part A and B mixture, mixed in a ratio of 35A:65B, so an accurate gram scale is necessary. Kryolan® two-part Cold Foam System Food coloring Respirator 99% alcohol (for cleaning molds) Misc. disposable cups У2- or 1-inch chip brushes Part A should be the color and consistency of a light maple […]

Cold foam is urethane foam and is called cold foam because it is not heat – cured like foam latex; urethane foam cures at room temperature. Cold foam (Kryolan® makes a urethane foam soft enough for prosthetic work) is an alter­native to foam latex and could be a good place to begin working with foam […]

Once you determine that your foam is fully cured, turn off the oven and let the molds begin to cool. If you try to cool the molds too rapidly, they will crack and break; you do not want to rush the process! When the molds are still warm to the touch, you can carefully demold […]

Once the mold is closed and the foam has gelled, it’s time to pop it into the oven. But first, you need to understand the following: (1) Higher temperatures make the foam gel faster, and (2) higher humidity makes the foam gel faster. To correct for these conditions, follow these tips: In hot and/or muggy […]