Smithing primarily deals with metalworking on a more broad scale, and as such works almost exclusively with melee weapons and heavy metallic armor, using some wood or leather as accent or connecting pieces.
Smithing Progression
| ┌Weapons┐ | ┌─ Armor ─┐ | |||||
|---|---|---|---|---|---|---|
| Rank | Hit | Dmg | AC | DR | MR | Lapidary Slots |
| -1 | -2 | -2 | -2 | -2 | -2 | None |
| 0 | -1 | -1 | -1 | -1 | -1 | 
|
| 1 | -1 | -1 | 0 | 0 | 0 |
|
| 2 | -1 | 0 | 0 | 0 | 0 |
|
| 3 | 0 | 0 | 0 | 0 | 0 |
|
| 4 | 0 | 0 | 0 | 0 | 0 | 
|
| 5 | 0 | 0 | 1 | 0 | 0 |
|
| 6 | 0 | 1 | 1 | 1 | 0 |
|
| 7 | 1 | 1 | 1 | 1 | 1 |
|
| 8 | 1 | 1 | 1 | 1 | 1 |
|
| 9 | 1 | 1 | 2 | 1 | 1 |
|
| 10 | 1 | 2 | 2 | 2 | 1 |
|
| 11 | 2 | 2 | 2 | 2 | 2 |
|
| 12 | 2 | 2 | 2 | 2 | 2 |
|
| 13 | 2 | 2 | 3 | 2 | 2 |
|
| 14 | 2 | 3 | 3 | 3 | 2 |
|
| 15 | 3 | 3 | 3 | 3 | 3 |
|
| 16 | 3 | 3 | 3 | 3 | 3 |
|
| 17 | 3 | 3 | 4 | 3 | 3 |
|
| 18 | 3 | 4 | 4 | 4 | 3 |
|
| 19 | 4 | 4 | 4 | 4 | 4 |
|
| 20 | 4 | 4 | 4 | 4 | 4 |
|
| 21 | 6 | 6 | 6 | 6 | 6 |
|
What a Smithy can produce
Bladed Weapons: Dagger, Sickle, Handaxe, Scimitar, Rapier, Longsword, Battleaxe, Greataxe, and Greatsword
Cleaving Weapons: Handaxe, Battleaxe, and Greataxe
Smashing Weapons: Light Hammer, Mace, Flail, War Pick, Warhammer, Morningstar, and Maul
Medium Armor: Chain-shirt, Spiked Armor, Scale Mail, Breastplate and Half-plate
Heavy Armor: Ring mail, Chain Mail, Splint and Plate
Other: Shield, Whip
Weapon and Armor Crafting Checks
Smithing an item is not a simple process, and takes 8 non-consecutive hours per attempt, the results of which are rolled after the final hour has finished. It is an exhausting process, and attempts to forge more than one item per day result in Exhaustion.
Roll a Smithing Check (1d20 + Strength modifier + Wisdom modifiers + Smithing Rank). If there are any helpers, add their Smithing Rank.
This is checked against the DC of the item to be crafted:
DC 14, plus the desired item's rank (if upgrading an item, subtract the item's current rank).
Crafting Results
If you roll below the DC, you still successfully create the item, but at a rank lower than what you desired. For every 5 below the DC, the item drops by one rank.
If you roll no more than 4 above the DC, you create your item at the desired rank.
If you roll 5 or more above the DC, you create your item at an elevated rank. For every 5 above the DC, the resultant item increases by one rank, to a maximum of 2 ranks above desired.