Mystery rod banging machine. Reminds me of a stamp mill. Any ideas?
<video controls autoplay loop>
<source src="https://s3-us-west-1.amazonaws.com/hmt-forum/rod_banger.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>
Previously:
https://www.homemadetools.net/forum/...257#post113043
https://www.homemadetools.net/forum/...440#post116871
https://www.homemadetools.net/forum/...809#post119112