Review of American Educational Concave Parabolic Large Demonstration Mirror

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List Price: $66.25
Sale Price: $61.71
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I am a teacher, and wanted a nice parabolic mirror for demonstrations.

This one does great, and with sunlight can set dark colored paper on fire. My only reason for not giving 5 stars is the shape is not that close to a perfect parabola, as the focal point is about the size of a quarter. So I imagine the actually shape is probably a catenary as those a much easier to make. My students loved roasting marshmallows on it (pumpkin ones... white ones reflect too much light!).

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I need a parabolic dish for an experiment I am conducting. Instead of custom making a dish I purchased this one and I am proceeding to strip the mirror backing, a slow process. It is glass so i am sure it will break easily if dropped or damaged in any way.

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it was working good untill i droped a 24 pack of pop on it in my car and now it's long gone i will not buy another one