If you want to get anything from the Smithing Ace page, you must pass the Barrier Of Entry for the Smithing Archetype. this means you need:
Igneous Cast & Arcane Forge
Solar Cast
Requires Barrier Of Entry : Smithing
The bonus to the rolls or armor class of your forged weapons and armors is now +4.
Gracious Forge
Requires Barrier Of Entry : Smithing
If you incorporate magic into a weapon or armor, the creature that equips that armor gains that magical element and can add it to their own paths (technique makers, spellmakers, etc.) when equipping the weapon/armor
MTG Transition
4 Points | 1 Max
Requires Barrier Of Entry : Smithing
When using scrap dealer, you can scrap a weapon or armor and, instead of turning it into scrap you can turn it into gold or other currency
Magic Pool
4 Points | 1 Max
Requires Barrier Of Entry : Smithing
You get one free extra spectral glaze that you can only apply to your own personal body.
Fast And Dirty
4 Points | 1 Max
Requires Barrier Of Entry : Smithing
Scrap and Sabotage can now be used as a bonus action. When done as a bonus action you have a +2 to rolling for sabotage.