Note that your quote says "same kind of skill check", not "a check with the same skill". The two statements ar enot precisely the same. IMO, that's where the purview of the DM as arbiter of the rules comes in.Mistwell said:Except it says the opposite in the rule: "You can help another character achieve success on his or her skill check by making the same kind of skill check in a cooperative effort." PHB 3.5 pg. 65-66.
The rules do not forbid it. The two are both the same "kind" of skill check (in this case, using Craft skills to manufacture something), which satisfies the RAW. Just like Diplomacy and Intimidate are both reaction/additude changing skills.Mistwell said:You can house rule it that way, but currently the rules would not permit a character to use one craft skill in an aid-another attempt for a different craft skill. Synergy bonus? Sure. But not an aid another.
And that is a fine houserule for your campaign, but the rules don't say "the same skill", they say "the same kind of skill check".Mistwell said:Again, that sounds like a fine house rule for your game, but it isn't in the rules that way. You can only aid another with the same skill.

Pendragon: Actually, I did point out that that was being very generous with bonusses.

More realistically, the situation I described above would IMO probably be worth a +8. Maybe a +10, if the party had a reputation for actually torturing prisoners (in which case, they're probably not the heroes, of course). And it assumes they have hours, even a day or more, in which to question their prisoner(s).