Masterworking is an endgame system that allows you to improve the current affixes of your gear. Special crafting material are used to apply Masterworking on your items at the Blacksmith. This system is extremely important at endgame and when trying to push through the hardest content in Diablo 4.
What is Masterworking?
Masterworking, like Tempering, is a crafting system that will upgrade all the affixes on an item.
Masterworking can be used to upgrade an item a total of 12 times. Each time, the Masterworking rank upgrades as well as the affixes of the gear piece. Most ranks will increase all affixes by 5%. However, ranks 4, 8, and 12 will increase one random affix by 25%. This could give you the chance to have a piece of gear with one affix increased by 75%. However, it is more likely that three random affixes will be increased by 25%.
Only Ancestral Legendary items that have two Tempered affixes or Uniques can be masterworked to rank 12 at the Blacksmith. Other items with below 800 item power can only be masterworked to rank 4.
How to Unlock Masterworking
Similar to Tempering, you will unlock Masterworking at the Blacksmith after you find base material needed to improve an item through Masterworking.
How to Masterwork
In order to use this system, you will need specific materials that you can find by doing Nightmare Dungeons, Infernal Hordes or Kurast Undercity, as well as gear that can be masterworked, such as tempered Ancestral Legendary items or Uniques.
Head to the Blacksmith, open the Masterworking tab, insert the gear item you want to improve, and then confirm the upgrade.
The upgrade will cost you:
- Gold
- Base materials such as:
- Unique crafting material found within Nightmare Dungeons:
How to Get Masterworking Materials
The unique crafting material needed for Masterworking can all be dropped in Nightmare Dungeons, Kurast Undercity, or in the Spoils of Materials at the end of the Infernal Hordes event.
After completing one of these endgame activities, you will be rewarded with 
Obducite.
We recommend farming Nightmare Dungeons for a decent amount of materials first before attempting to Masterwork, as well as making sure you are using your materials on a perfect or close-to-perfect item. Depending on your luck, Masterworking can take quite a lot of materials to upgrade your item to rank 12, with interesting 25% boosts on specific affixes.
Masterworking Ranks
You can upgrade your affixes a total of 12 times for Ancestral items. Any affix on the item will be improved by Masterworking, including Greater Affixes. Non Ancestral items can be masterworked to rank 8. Additionally, the Occultist can Enchant (reroll) these Masterworked affixes to a new affix with the same increased Masterworking rank. Moreover, re-tempered items will also retain their previously obtained Masterworking rank.
With significant stat increases at ranks 4, 8, and 12, the item tooltip will clearly highlight the upgraded affixes through distinct colors:
- Blue: 25% increase
- Yellow: 50% increase
- Orange: 75% increase
A Masterworking upgrade never fails. The table below includes a description of each rank, their effect, and costs (which are still subject to change).
The material needed for Masterworking depends on the rank and the type of armor (armor, weapon, jewelry). For example, weapons and jewelry require 
Iron Chunk.
Can You Reset Masterworking?
Yes! Once an item has been improved through Masterworking, you have the possibility to reset all Masterworking ranks on the piece of gear, but be aware that the materials used in the process will not be refunded. This can help if you are aiming for a specific 25% or 50% roll on an affix.
The following items are required to reset masterwork ranks from Rank 12 to 0:
- 30
Rawhide / 30 Iron Chunk - 20
Veiled Crystal - 5
Forgotten Soul - 5,000,000 Gold
