![]() We recommend either modeling it on your computer, or building a cardboard mockup to make sure it will come together correctly. The dimensions are also tricky to get right if you are not building a 3D model to get the exact dimensions you need. The dimensions are also highly dependent on you monitor size. If not done properly, the acrylic sheet can break in unintended ways, the edges may not be straight, and the frustum may not go together well. We had to score and break off pieces of acrylic sheets to exact dimensions. The frustum is three pieces of acrylic sheet brought together to form a three-sided pyramid with a 45 degree slope. Making the frustum is one of the more challenging parts of the build.
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