Board planing jig. By J-woodworking. 9:41 video:
https://www.youtube.com/watch?v=HJtysNFbZ-o
Previously:
https://www.homemadetools.net/forum/...895#post183618
https://www.homemadetools.net/forum/...447#post166282
https://www.homemadetools.net/forum/...015#post145045
