Atrium lift.
https://s3-us-west-1.amazonaws.com/h...trium_lift.jpg
Previously:
https://www.homemadetools.net/forum/...141#post134486
https://www.homemadetools.net/forum/...734#post139991
https://www.homemadetools.net/forum/...058#post149375
Printable View
Aka "the Scorpion"
I'll bet that's wobbly.