In a previous post I showed a paper egg (from Michaels) which I had covered in polymer clay just as an experiment and found a disturbing result, that is, that the polymer clay shrank over the paper egg and split. So I reasoned that the egg (which was quite large, maybe 4-5 inches in height and 3.5 or 4 in diameter) was part of the problem and so when i found a smaller egg (about 4 inches in height and 3 inches in diameter that it might work.
So again I set out to do a test to see if i could cover a paper egg of this size with polymer clay. I made the coating over the paper egg about 1/8 thick, maybe a little thicker, and rolled it smooth and then textured it. The polymer clay in this case was all “left over” and you can see the flower petals it in from previous Memory-beads.com projects (see the yellow clay and pink spirals), so it is not what one would consider anything more than an experiment. But sadly, it also cracked (vertically) in one area of black and white clay, maybe a split an inch long and sixteenth of an inch wide (barely visible) and another smaller split along the bottom. I used left over polymer clay from the same areas to “fill” the splits (doming it up over the to of the cracks and also pressing it into the cracks (not an easy task) and cured it again for just a half an hour. The result seems stable and I was able to sand the polymer clay smooth against the rest of the egg so the split is almost invisible…. but I likely wont experiment more using these brown paper molds. The split didnt occur because i forgot to put a pin hole for air expansion in…. i did remember, but something in cooling and shrinking just didnt work well together.