Envelope opener.
<video controls autoplay loop> <source src="https://diqn32j8nouaz.cloudfront.net/battery_envelope_opener.mp4" type="video/mp4"> Your browser does not support the video tag. </video>
Previously:
https://www.homemadetools.net/forum/...497#post147104
https://www.homemadetools.net/forum/...399#post185400
https://www.homemadetools.net/forum/...010#post176061
