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Length and width should be at least 1.5 inches more than the size of your paper
in each direction.
- Depth should be 2 to 3 inches.
- Light-colored or white interior trays allow the colors floating on the surface
to be seen clearly.
- Examples:
- Varnished wood (waterproof), plastic or stainless steel.
- (11½" x 17¼") cookie sheet
- Clear plastic 11" x 14" box picture frame
- Cake pans
- Photographic trays.
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