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Discussion Starter · #1 ·
Suppose you're building your first diy 3d background and your second layer of concrete dries with a bunch of cracks in it. Is it time to scrap it? Or, can you mix a thin layer over top or add sealer or something?

TIA
 

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thin layers w/drying in between should be a decent patch job. Gently wiggle the peices in question when it is dry, then you should be able to determine if the repair job will hold.

Why did it crack is a question needed to be answered!
 
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