Nope, I meant d6. The example Eldhierta used split a dice by the actual number, not the die type: d12 becomes a d8+d4 or d6+d6. Using that example, it wouldn't be possible with a d6, as you'd need a d4+d2.You mean "but not for splitting a d4 resource", right?Sure, that works, too (but not for splitting a d6 resource). I guess my point was that the resource dice should be amended, but not require a consume-type roll.
It seems to me that it should work, in most cases, to simply lower your own dice level by the same number that you want to increase someone elses. So a d6 can be split into two d4, a d8 into d6+d4, etc.
Sharing a d4 resource could be handled by rolling for the resource immediately. If it fails, then the giver & recipient have to decide who gets to take the entire resource, leaving nothing to the other. If it succeeds, then the giver keeps the d4 level and the recipient gets the special resource value of "1". I.e. a single ration.
So yeah, I'm not too bothered how this is handled so long as a consumable is split without needing to roll.