Guiding a razor with a button. Doing some detailing or tinting I believe.
<video controls autoplay loop>
<source src="https://s3-us-west-1.amazonaws.com/hmt-forum/guiding_a_razor_with_a_button.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>
Previously:
https://www.homemadetools.net/forum/...114#post134361