For a graduation cake, I'm making a four wheeler (ATV) out of RKT. The forecast is 85 degrees, and my friend doesn't have A/C. She plans to leave the cake sit out and serve the other cakes first. So, I'm trying to determine what will be best for covering the RKT. I know both fondant and modeling chocolate are sensitive to heat. I don't know that I really want to use gumpaste due to the expense (as well as the fast drying time...I'm kind of slow.) Based on your experience, which would work better, I'm thinking fondant?
I don't know for certain, BUT my gut instinct when I read your post was GUMPASTE. Then I realized I had to choose between fondant & modeling paste...LOL...so my answer change to fondant. I buy gumpaste in larger quantities and so it cheaper. Even a 5 lb bucket is cheaper than buying from some kind of hobby store (and you know you'll use it!! It's not like it's a 50lb bucket. )
definitely fondant. Modeling chocolate melts very, very easily.