Assists in creating 3d scratch holograms (aka abrasion holograms or chatoyant holograms). They can be created on acrylic or metal sheets using only an adjustable compass as described on Bill Beaty's website: http://www.eskimo.com/~billb/amateur/holo1.htm
30 Day SummaryJul 12 2025 — Aug 11 2025
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12 Month SummaryAug 11 2024 — Aug 11 2025
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