How to Make Concrete Molds From Plastic Items

sand moulds in the snow image by Daria Miroshnikova from

What do you have kicking around the house that will make a nice mould? Making concrete moulds from plastic items requires you to think outside the box. Look in your shed or garage for common plastic items such as old tubs, flower planters, buckets, jars and large container lids. Plastic boxes, statuary, kids' beach toys, litter cans and sandbox toys are possibilities. With your collection of plastic moulds, you can create stepping stones, statuary, planters, personalised plaques and all sorts of decorations. Let your imagination guide you. Making concrete garden accents with plastic moulds can be thrifty fun for the whole family.

Sun Face on Stepping Stone image by nTripp from

Line a square, round or heart-shaped plastic pan with a tight layer of rocks. Carefully pour concrete into the mould to make a garden stepping stone.

planters image by Paula Gent from

Pour concrete into fancy, round or square plastic planters. Use a smaller plastic container to form the inside of the planter. Your new concrete planter will be shaped and decorated just like the hard plastic original.

mushroom image by Henryk Olszewski from

Pour concrete into a small round dustbin. Pour concrete into a plastic bowl and when dry, stack the cap on top to make a mushroom. Embellish with tiles, glass, pottery, rocks, pebbles, marbles, jewellery or trinkets of your choice using liquid nails.

Transform a flimsy old plastic birdbath into a solid concrete birdbath. Cut a hole in the top of the base and fill with concrete. Pour concrete into an appropriate sized plastic saucer; a smooth dustbin lid might work.

squirrel bath image by Ray Kasprzak from

Press an original plastic birdbath top firmly into the wet concrete with a slow twisting motion to form the bath basin. If desired, lift the top mould off again and lightly press fern leaves on top of the wet concrete to stamp it.

park fountain image by Aaron Kohr from

Replace the plastic birdbath top if needed to maintain the basin's shape. When dry, use a razor knife or sharp tool to cut along the seam of your plastic mould to release the birdbath base.

Concrete Sphere image by Richard evans from

Experiment with durable inflatable balls for children, basketballs, soccer balls or any other thick plastic ball. Cut a small hole, funnel in concrete until packed and overflowing, and then seal hole. When concrete is dry, cut away plastic and round out the top with sandpaper or a chisel.

green moss image by Julia Chernikova from

Grow sheet moss on top of your concrete ball or decorate it to your liking. The bottom will have flattened from the weight of the concrete, so it will sit nicely on top of a homemade pillar.

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