inutes and then removed.6.After cooling the mold we removed the mold nuts and removed the molded materials.ResultsThe raw bead expansion procedure was successful; the beads expanded and made terrific molds. While being heated in the mold the expansion of gasses caused the beads to expand. Our molds were in the shapes of spheres, one looked like a softball and the other looked like a regular sphere. Below are hand sketches our molds.The outcome of the pre-expanded bead mold was less fortunate. The beads did not take shape of the mold. To be more precise the beads did not change at all.ConclusionIn conclusion the raw bead expansion procedure appears to be a better method for polystyrene molding. The raw bead expansion procedure proved true to my expectations and the molds turned out good. However we apparently performed the pre-expanded bead mold incorrectly and the results were a failure. After performing the lab I looked through the job sheet for this project and found a side note we overlooked on page 34. It specifically states to use freshly pre-expanded beads and the storage of expanded beads is 6 days maximum....
