So I was making a Lil’ Cal head for my doll, and used model magic over foil to make the top layer. Of course, as with all my other model magic over foil projects (horns, mostly), it cracked. But since it was bigger than anything I’d done before the cracks were really deep and I wouldn’t have been able to fix them with mod podge. So I did a little research, and found a Stuck on Homestuck Cosplay tutorial on fixing the cracks! Now, their recipe called for a little bit of model magic, some water, and a LOT of glue, which seemed a bit odd to me, considering I wanted to fill the cracks with more clay (not glue). So after tinkering about, I came up with a pretty perfect recipe! This makes a lot of filler, so you might want to halve it.
MODEL MAGIC CRACK FILLER
1/2 cup very hot water
1 ball model magic, about the size your fingers make if you connect your forefinger and thumb
1/4 cup mod podge
Optional: A couple drops of food coloring, if you want, though I didn’t use any. The foam will be the same color as your clay, but you can probably make a really wide spectrum of colors using food coloring and different clay colors!
Start with the hot water in a disposable container, and slowly add little pieces of model magic, stirring consistently until they’re dissolved. Once you’ve got about 3/4 of the clay in, add the mod podge and stir like mad, gradually adding the last of the clay. Keep stirring for about 5 minutes, or until the model magic is as dissolved as possible. At this stage, if you let it sit, a light but thick foam will start to form at the top of your container. This is what you’re going to use! It’ll be the perfect consistency if you let it cool a bit, but you can start applying the foam as soon as it starts to form. Using your fingers, press the foam into the cracks of your clay until they’re full, then add another layer on top to seal it! It’ll be a bit goopy looking, so you’ll have to sand it when it’s done, but voila! When you’ve used all the foam, just throw away the watery stuff left at the bottom of your container. Tadaa! The perfect way to fix cracks in model magic :) And obviously, feel free to experiment with the recipe and with applications!