Request a Homebrew: Thread 2!

[desero clades]

Hmm. Is there some guideline I'm not aware of for this? Because I can't figure out how you got this conclusion. Two-handed weapons are the same size category as their wielder (usually), and it's reasonable to assume an improvised weapon will probably be less damaging than a deliberately constructed weapon, so simple two-handed weapons seem like the best match; of those, two have 1d8 damage and one has 1d6/1d6 double-ended.

I follow this guideline actually

A weapon’s size category isn’t the same as its size as an object. Instead, a weapon’s size category is keyed to the size of the intended wielder. In general, a light weapon is an object two size categories smaller than the wielder, a one-handed weapon is an object one size category smaller than the wielder, and a two-handed weapon is an object of the same size category as the wielder.

Edit: This is actually in the PHB page 113