The Ultimate Blue-Collar Challenge: Can You Identify These 20 Hardcore Concrete Tools?
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What joint-cutting hand tool is used to carve straight control lines in sidewalks to force expansion cracks to happen in a neat line?
Explanation
A Concrete Groover (or jointer) cuts control joints into the wet mud. When the ground shifts or temperature changes cause the slab to shrink and crack, it will break along this pre-carved grooved path, keeping the surface looking neat.