When I attempted to mold the first tray, I placed it in a boiling cup of water as directed and it melted and stuck to itself in 5 seconds. When I tried to separate the pieces, they crumbled into a sticky lump. For the second tray, I let the water cool and then put the tray in for only about 4 seconds and I was able to successfully shape the tray. I really only needed one I think but they are a bit flimsy.
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