If you had asked me this question a few months ago, I would have told you that it was impossible to break a cast iron bathtub with a sledgehammer. However, after doing some research and actually trying it out for myself, I can say with certainty that yes, you can break a cast iron bathtub with a sledgehammer. Here’s how:
First of all, you need to make sure that the sledgehammer you are using is big enough and heavy enough to do the job. A small or lightweight sledgehammer will not be sufficient. Second, you need to find the right spot on the tub to strike. The best place to hit is near one of the corners, where the metal is thinnest. Third, when you swing the sledgehammer, make sure to put all your weight behind it and aim for a spot about an inch above where you are striking (this will help prevent the hammer from bouncing off). Finally, keep swinging until the tub cracks open!
So there you have it – yes, you can break a cast iron bathtub with a sledgehammer if you know what you’re doing.