Covering Dummy Cake W/joint Compound & Fondant??
Decorating By ellyrae Updated 6 Jun 2006 , 8:13pm by BlakesCakes
Several questions: I was wondering if anyone has ever covered a dummy cake with joint compound (instead of icing) and then fondant over that? If so, did you wait for the compound to dry first before placing your fondant or did you cover it while still wet?
Also, has anyone ever used anything other than joint compound (besides BC) to cover a dummy cake under fondant?
What do you think the results would be if you covered a dummy cake w/fondant without any sort of undercoating? 
Have you ever added anything extra to your fondant for it to harden when making a dummy cake for a long lasting display??
I've done some searching in back forums but haven't really found any information in the time that I've had. Any suggestions or ideas welcome! 
Thank you in advance!! 
elly 
I know this is a little old but I would love to hear answers.... so I am gonna *Bump* it....
I will try to answer the questions that I can and hopefully someone else wil have the other answers.
I have only covered dummies with BC. But if you wanted to use the joing compund you would need to put the fondant on it while it is still moist so the fondant adheres to it.
You really do need something underthe fondant for it to adhere to. Some people use a simple syrup like the one they use on cakes, you could also use piping gel, anything moist for it to adhere too, or the weight of the fondant on the sides might pull it down and rip the corners.
As for adding anything to the fondant to make it hard-if i remember correctly, gum-tex will make it try quicker, not sure if it will make it harder though. As long as you let it dry completly before you try to clean it I don't think you'll have a problem.
If I remember correctly Kay-Day had posted something about the displays in her shop and being fondant. If it wasn't here I am not sure who it was...
Hope what I could tell you helped.
Leily
I used spackle (I think its the same as joint compound) anyway, I wanted to seal in the styrofoam. After it dried, I put buttercream on them and then the fondant. It worked fine.
The only thing you need to put on a dummy cake to get fondant to adhere to it is water--I promise! Doing it this way allows you time to move the fondant, if necessary. Also, leftovers that you cut away can still be mixed back in with other fondant because it isn't contaminated with spackle, syrup, or piping gel.
Your dummy needs to be smooth, so if it has nicks and dings in it you can put some royal icing in the worst of them, smooth it out, and let it dry hard. Make sure the edges of the dummy are rounded off a bit--sand them, roll them with a small rolling pin, "iron" them with a warm iron--so that the fondant doesn't tear on the sharp edges.
If you look in my photos, you'll see a white cake with sugar snowman and a large art deco pink competition cake--all done on dummies sprayed with water and covered in fondant--and they're all still sitting in my house, intact, and to get the fondant off I'll need to soak them in hot water.
Rae
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