Tormented Soul on a level 22+ weapon gives +3 Strength and +3 Dexterity (CR 5)
Actually other crafting stuff seems to be affected as well: Stuff like the Skull Belt will give you +2 instead of +1 Constitution.
I have something that you could add to the crafting FAQ in this or a modified form.Examples of good item upgrades:
With blacksmithing and crafting you can boost your gear significantly:
Rubies adds +25% resistance from all 4 Elements to your Armor
Scales adds +10% Armor
Anvil removes the Movement penalty from Heavy Armor and replaces it with +0.10 Movement
Tenebrium adds +30% close to unpreventable damage and checks the Ability Tenebrium instead of its old category (1handed / Bow /...) for the calculation of bonus damage (in addition to the above 30%)
Adding Spikes (Nails) to your Boots adds Immunity to Slipping
Whetstone adds +25% additional damage (regular damage and elemental damage)
Tormented Soul adds +2 Dexterity and +2 Strength (+3 /+3 if you are level 22+) to any weapon
Sextant adds +2 Pereption to ranged weapons (+3 if you are level 22+)Examples of good crafted items
My handcrafted 2-Handed Axe deals 1066 dmg per hit, the Bow 549 or the 1Handed Sword of Planets with 656 damage and +25% resistancefrom all 4 Elements (not counting temporary boni, stances or resistances). This also has the benefit that you can always use a weapon that is your level.
Voodoo Dolls are one time items that deal ~500 damage +75% Bleeding for 0 AP (level dependend). You can craft > 50 of these during the game.
On top of that you can craft Rings, Amulets and Belts that give +1 to one of your attributes and selected Abilities (+2 later) or the +2 Int Staff (+3 later) for your Mage.
You can make a lot of Gold selling your crafted items: A sharpened 1 handed Axe that requires nothing but a regular steel bar has a nominal value of 3204 Gold. Most Iron Weapons can be forged back into Iron / Steel Bars, which can be more profitable than selling them.