can you describe the parts you wanted to cast, techniques you used and describe the thicknesses involved. it makes sense to me that thicker sections vs. thinner sections would expand at different rates so i would expect some distortion. how much did you try to grow? did you do interim steps to make new molds after some level of growth to avoid some distortion? what ever info you have even if a failure i would appreciate knowing. i have some projects that i would like to experiment with. i had already planned on a level of distortion. i would like to see if i can control or mitigate that distortion. If answering these questions is a pain I will understand. If the story is complex a PM will be ok to. let me know. thanks.