Requires in a forge:
Has a 40% (base) chance of success. (max 100% @ Lv 100 Forging)
The Best Way to ObtainEdit
The second best way to obtain the components is quite a bit more Complex:
You will want to start with the hardest to see how well you fare, that would be done by mining the Coal from Rakblood's Town's Coal Vein. You may need to defeat 2 Bronze Golems blocking the road between Rakblood Town and the Coal Vein. If you are not high enough Combat Level to avoid Aggro, you will need to fight up to 8 Bronze Golems (assuming bad path finding) and 1 Iron Golem (2 if going for the non-vein Coal)
* Iron Vein to be completed soon
Remember that most Pets will increase your available inventory size when equipped!