Version of mod is RefinedRelocation-1.7.10-1.0.7d.jar
Version of carpenter's blocks is Carpenter's Blocks v3.3.3 - MC 1.7.10.jar

Shift-rightclicking the toolbox on empty air doesn't find or take the carpenter's hammer into the toolbox.

Looking at the toolbox code, "carpentersblocks.api.ICarpentersHammer" is an accepted type (and from what I can see the hammer item does implement it) so it ought to work. No idea why not, I can't find the problem myself (so here is an issue for it).

The item type reported by minecraft is a 'CarpentersBlocks:itemCarpentersHammer', as expected.

Please let me know if I can provide any other useful information!