From the page: A thousand colors in a few grams
Idea 1
Colorful tray mosaic
Mosaic was born with the Romans and Byzantines, who covered entire walls with small colored pieces called tesserae — the more pieces, the livelier the image. Bottle caps work as modern tesserae: the smooth plastic reflects light in a unique way, and the varied colors form vibrant designs without needing any paint at all.
What you need
- A wooden or MDF tray, or any rigid base (a box lid works)
- Clean, dry plastic bottle caps in several colors
- White glue (PVA) or hot glue
- A simple design drawn in pencil on the base (circles, flowers, spiral)
- Adhesive tape and a heavy cloth for the pressing step
How to make it
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1
Clean and dry each cap thoroughly: glue won't stick to a greasy or dusty surface, and the plastic's shine only shows when it's clean.
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2
Draw the motif on the bottom of the tray in pencil, thinking in circles and bands — simple shapes highlight the colors of the caps better than tiny details.
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3
Glue the caps one by one following the design, colored side up, pressing each one for a few seconds to ensure adhesion.
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4
Let it dry for a few hours and, if you want extra firmness, cover the mosaic with a cloth and place a heavy book on top overnight — even pressure prevents any piece from lifting.
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5
Finish by brushing a coat of white glue diluted in a little water between the pieces, like an artisanal grout that gives it the look of a single, unified piece.
Finishing touches
Round trays call for mandalas; rectangular ones, stripes or color gradients. If it's a decorative piece, a final coat of non-toxic varnish makes the plastic's shine even more evident.
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