1. Measure the height and width of the actual screen of your television or computer monitor. Be sure that you do NOT measure the the box area that surrounds the screen.
2.Mark out the measurements on the cardboard or wood with a pencil. The depth should be 18 inches. You should have four pieces. The diagram below shows the measurements of the four pieces 3.Cut the cardboard or wood with a Stanley knife or box cutter. Sit these pieces to the side for now. You will put them together later. |
Step FourCut the cardboard or wood with a Stanley knife or box cutter. Sit these pieces to the side for now. You will put them together later.
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Step FiveCut the cardboard or wood with a Stanley knife or box cutter. Sit these pieces to the side for now. You will put them together later.
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Step SixPlace the Fresnel lens in the middle of the focusing board and use the fifth largest circle on it to trace a circle in board.
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