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The rigid plastic of Legos lend themselves nicely to the mold board and then the bricks snap into the mold board - no need for glue or clay to seal the walls to the board - and they are reuseable.
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I have never used Lego to build mold walls, but I've heard that folks love using them.
My only concern would be using them to cast a mold in plaster, as there is water involved and I'm not sure how perfectly sealed the seams between the bricks are.
But for all other applications, they sound like a great solution.
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Posted:Feb 18, 2017
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