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STYLE / A VISUAL GUIDE

Make Mailable Tape-Resist Watercolor Postcards

Simple screen-free play ideas for children ages 4–8.

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Choose Sturdy Paper Stock

Use pre-cut 4 by 6 inch postcard pads made from 140 lb (300 gsm) cold-press watercolor paper. This thickness meets USPS sorting machine standards and prevents warping or tearing under wet paint.

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Pick Safe, Low-Tack Supplies

Choose solid pan watercolors bearing the ACMI Approved Product (AP) non-toxic seal. Use delicate-surface painter tape or light washi tape to create clean boundaries that peel away without ripping fibers.

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Set Up a Low-Mess Station

Place postcards on rimmed baking trays to catch stray drips. Limit water cups to 2 fluid ounces, dab wet brushes on paper towels, and firmly press down tape edges with a thumb or spoon.

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Wait and Peel at a 45-Degree Angle

Touch-test the card before peeling; it must feel room-temperature and fully dry. Pull tape back slowly at a shallow 45-degree angle flat against the card to avoid tearing the paper pulp.

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Format the Address Side Correctly

Keep the card back entirely flat with no 3D stickers. Reserve the left half for messages and the right half for recipient address and postage, leaving a blank 0.625-inch margin across the bottom.

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