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A torch, some clingfilm and a piece of cardboard - something like a white or pale-coloured wall, a fridge or a white sheet can be used as a screen. Someone with a bit more time might bother to create a focus using a pair of glasses or a magnifying glass, and could build a simple structure to hold the whole lot in place.
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∙ 14y ago
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Dental materials are examples of materials that are used to make impressions.
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what materials were used to make coal trucks
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