Farrier's swing-out hitch anvils.
https://s3-us-west-1.amazonaws.com/h...ier_anvil1.jpg
https://s3-us-west-1.amazonaws.com/h...ier_anvil2.jpg
Previously:
https://www.homemadetools.net/forum/...213#post121319
https://www.homemadetools.net/forum/...796#post163731
https://www.homemadetools.net/forum/...240#post121457
https://www.homemadetools.net/forum/...252#post141955
https://www.homemadetools.net/forum/...499#post151232
https://www.homemadetools.net/forum/...551#post132369