CleverRaven/Cataclysm-DDA — pull request #6244 by KA101 (2014-02-21 20:36:25+00:00)
Title: Toolset upgrade

I think it was originally intended to represent *removing* nails, so claw hammer or (somehow) nail-sucking nailgun worked. Nowadays, the hammer appears to simply knock things a little looser, so no such restriction necessary.