Railway spike driver.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...r_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...way_spiker.jpg
Previously:
https://www.homemadetools.net/forum/...708#post133110
https://www.homemadetools.net/forum/...958#post124998
https://www.homemadetools.net/forum/...229#post145964
https://www.homemadetools.net/forum/...047#post125523
https://www.homemadetools.net/forum/...2795#post97153
https://www.homemadetools.net/forum/...1740#post75040
https://www.homemadetools.net/forum/...217#post145916
https://www.homemadetools.net/forum/...976#post137677
https://www.homemadetools.net/forum/...1502#post74535