Looks closer to 4 1/2 stars to me. This is my first attempt at welding anything. I used a regular Revlon hair dryer at high speed. The shrink wrap fits snugly around my bath bombs. I have no problems with corners. There is a special way to deal with a hair dryer when it shrinks. For me I pinched the corner (using a bath bomb in the package) as the heat shrunk giving it a round shape. It does leave an extra top piece, though, and that's okay. But I removed the excess shrink wrap and tried to seal the bath bomb completely but it didn't work for me. My hair dryer started melting my bath bomb (mess). So there's no harm in skipping the top. It will be easier for my customers to get the bomb out of the box. It leaves this "golf ball" pattern on my bath bomb. I also put some shrink wrap on one of my bottles to see how it would work as long as it was sealed fairly well. In general I like it, you need to order one size larger. These are my little bath bombs.
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