I covered a square styrofoam dummy cake last night and it tore at the corners. Everywhere else was nice and smooth. I brushed the dummy with water prior to covering and also sanded down the edges. What did I do wrong? Should I cover the styrofoam with royal icing first?
Your fondant could have been to thin. You can roll the edges of the dummy on a hard surface and that will make them a little more rounded too. Also your fondant may have been a little to dry. If you see this happen in time you can rub a little crisco on that spot and work out the rough spot that may help with the dryness. HTH
sometimes with square cakes too the weight of the fondant itself pulling down over the corners is enough to tear it. try rolling it up on your rolling pin and unrolling it a little at a time onto your cake making sure to pat the fondant into the sides to keep the weight off the top and corners of the fondant (hope that makes sense?) Then you can go back and do your normal smoothing job...square cakes can be tricky because of that, and it seems the dummies would be more tricky than real cake because of the hard edges
smooSH DOWN THE SHARP EDGES A BIT TOO BEfoRE YOU COVER ( DUMMY)
not yelling but too lazy to retype