I want to sincerely thank all of you for the input! It is a LOT to consider! The cake is a 3D dinosaur cake. My first attempt of the kind, and a lot of trial and error have gone into it.
Basically, we need enough to feed 15 people, and this thing if I made it entirely edible would probably have fed at least 50. that said, I didn't take much precaution covering the PVC pipe and dowels before applying the RKT - mainly because those head, legs, and tail won't get eaten. I'm doing them days in advance and letting them harden. the belly will have some edible RKT for filler, since I' not feeeding an army (if I had to do in all cakes, it would have taken me 4 boxes of cake mix or something like that - as it is I did 3 boxes cake mix - which is crazy to feed 15 people - lol.
it's only family, and I'll be cutting/serving it, so no worries on who eats what really.
That said however, I would like to get the gum tex to try it - but the denure powder might be a quick dirty fix for this first trial and error cake. the only problem is I don't know what I'd do for the left over denture powder. don't have anyone that I know of that uses it. I am greatly appreciative of your input!
the arms probably are only going to take about a handful of fondant, so it'll be trial and error. any idea if it dries it out and cracks it? or just hardens it? the Gum tex that is - I am hoping to get back to the craft store if possible to pick it up.
thank you so much again!!