Nothing. I think I am the only one that uses hatchets to farm mobs. And only when I am feeling funny. I have like 125 deeds to burn.
I made a bug report once and it opened my eyes: http://uorforum.com/threads/hatchets-not-repairable-per-smith-repair-deed-i-tested-it.13608/
There is low to no market for them. DE-NEUTER AND UN-TRAMMIFY TINKER TRAPS! Their functionality here is embarrassing. Oh and, tinker golems.... yeah!