Silk touch appears to be being ignored when dropping the cover blocks as items, leading to stone-covered carpenters blocks dropping cobblestone (I tested it with both smoothstone and artifice stone). This is somewhat annoying, given the need to resmelt it.

I take it those are mod items? I may have mentioned that the ItemStacks themselves are only ever altered if they're the rotating vanilla pillar type, otherwise they're left untouched. That's as of a few commits ago. This is the latest build that has this change: https://dl.dropboxusercontent.com/s/0tfk5o3qrj1lc15/Carpenter%27s%20Blocks%20v3.3.4.3%20-%20MC%201.7.10.jar

Smoothstone is the vanilla stone block. However, this was not the most recent build of Carpenter's blocks. I will try that; can I safely update in Forge 1205?

Updating shouldn't be a problem, usually.

OK, I updated, and it fixes the issue. Thank you. :)