Pouring Concrete Into Legos: Dishrack
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Use Legos to make a silicone mold for the dish racks
This mold is for a small dish rack for a coffee cup or cereal bowl.
1
Use mold Star 30 silicone mold making materials to build the exact dish rack
2
Make a simple design that uses a few slopes Lego bricks on the side that will drain into the sink
3
Use the hot glue gun to secure the Legos to a piece of melamine
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Hot glue some scrap pieces of wood around the Lego contraption. Seal all seams, corners, and edges
5
Use some silicone sealant to seal the mold from the inside
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Let silicone sealant cure for 24 hours to before mixing the two part silicone mold making material
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Cure silicone for 24 hours. Then remove hot glue & wood with knife. Peel silicone off Lego structure
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Remove stuck Legos by hand
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Use a chisel to scrape away the glue that was holding the Legos down
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Use a razor blade to trim the little feathery pieces that formed between the cracks
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For the first dish rack use a premium concrete mix: Quikrete Countertop Mix in white
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Mix the concrete and pour into the silicone mold. For a Travertine type texture don’t vibrate much
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48 hours later pop it out of the mold. Wait for it to thoroughly dry for the color to lighten
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Mold is reusable. Switched to Quikrete 5000. This time vibrate a lot to get rid of the bubbles
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There is no need to seal these
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To accommodate a plate make an additional block that will fit into the grooves of the dish rack
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Used some duck tape and blue painters tape and Lego bricks. Poured concrete and made a stop block
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These dish racks can be produced for about $1 worth of concrete
Quikrete 5000
Lego Bricks
Star 30 Silicone Mold Making Material