I wanted to make a calf block, but it turns out I'm absolutely terrible at woodworking...so broke down and chose this one. It is nice, and works well. I do like the addition of the squat wedge, it does add space but adds a nice extra. It has a very high weight capacity, but isn't very cheap. You definitely can definitely make one for significantly less, or buy a cheaper one. That being said, I would recommend it. I use this weekly for calf raises, and it has held up (with almost 600 lbs total). It has a nice cutout on the middle with a handle, which makes it very easy to move.
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