Concrete pillar crusher.
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Previously:
https://www.homemadetools.net/forum/...009#post145012
https://www.homemadetools.net/forum/...349#post110233
https://www.homemadetools.net/forum/...579#post143186
https://www.homemadetools.net/forum/...875#post140445
https://www.homemadetools.net/forum/...696#post136674
https://www.homemadetools.net/forum/...088#post120617
https://www.homemadetools.net/forum/...3100#post98061