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Normal "full length" sledge is 8 lbs, normal "hand sledge" (short handle) is 4. Excess weight may have two downsides - one is more wear and tear on you the operator, and the other is that you may get lower velocity on your hits - and since energy is mass times velocity squared, a hammer weighing 12 lbs still needs to make at least 81% of the velocity of the ...


1

You can take a 2x4 lay it next to the stop, with the 2" side facing the ceiling. Take a sledge hammer and hit the 2x4 gently, to see if it will separate from the ground. You might have to try all sides of the stop to dislodge it. The possible reason the water isn't seeping out is it is going through the concrete slab to ground. Once the stop comes ...



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