Grinding a railroad rail profile after thermite welding.
<video controls autoplay loop>
<source src="https://s3-us-west-1.amazonaws.com/hmt-forum/rail_profile_grinder_after_thermite_welding.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>
Previously:
https://www.homemadetools.net/forum/...144#post120921
https://www.homemadetools.net/forum/...121#post115609