A lot of weapons are already craftable, but not grenades. Finding them is a bigger pain than simply building one from scratch, so why not?
Some rough numbers to work with:
Fragmentation Grenade: 2 Small Bottles of Gunpowder, 1 Chunk of Iron
Concussion Grenade: 2 Small Bottles of Gunpowder, 1 Chunk of Steel
White Phosphorus Grenade: 3 Small Bottles of Gunpowder
Shock Sphere: 2 Small Bottles of Gunpowder, 1 Potion of Electricity Affinity
They're already pretty niche as they are, but I'm sitting on a build begging to use them. Doesn't sound like a lot of work either (maybe the potion could be trouble but I'm fine with leaving that recipe out if so).
Ability to craft grenades
Ability to craft grenades
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