I was curious to see if anyone knew of a good recipe to use for 3D cakes to help them stand up. A regular cake mix just doesn't seem to do as good.

Try Dromadery pound cake. If it is not availavle in you area use a local poundcake mix and add extra flour to stiffen the cake.

Junebuggey

This recipe is awesome! I've gotten so many compliments on it! http://cakecentral.com/cake_recipe-1972-3-Durable-Cake-for-3D-and-Wedding-Cakes.html

This recipe is from Bunnywoman, a regular on the Wilton site and a perfectly wonderful person!
Bunnywoman's Pound Cake Recipe - or recipe for a stand-up bear or a cake where you need the cake to be able to hold up well
1 pkg any flavour cake mix
1 pkg. of the complimentary flavour of instant pudding mix, 4 servings size - for example for a white mix use vanilla pudding mix, etc.
1 cup whole milk
1 cup Crisco oil
4 large eggs
Blend ingredients for about 1 minute on low then 2 minutes on medium, scraping sides of bowl often. Bake for around the regular time frame, but at 325F.. I found I had to increase the time considerably - probably because of the amount of oil in the liquids. This makes a spongey type of cake, really moist though and good.

Thanks a bunch. I'll have to try those recipes.