Black Desert Accessory Failstack Calculator will help tell you how many fail stacks to use in the game Black Desert Online. This will help you save silver in the long run. These results do not guarantee or provide the highest chance of success for a given enchant, it simply provides you with the most optimal amount of failstacks for reaching your goals, so that you spend the least amount of silver on average pursuing your goals.
For “Desired enchant level”:
While the program will instruct you to use DUO armor at a certain threshold, if you have lots of PRI armor to use for fail stacking, it’s generally OK to use PRI armor for fail stacking within 10 stacks or so of the thresh hold the program specifies for DUO. For example, if it tells you to use +14 until 22 failstacks, then use DUO until 50, you can start using PRI at 15 and until 30.
To failstack on +14 armor, buy reblath from a blacksmith and get it to +14. If it goes to +15 while trying to fail stack, simply log onto an alt with negative karma, and die to mobs to lose enchant levels.
The calculator does assume that your failstack generation is through intentional means(such as +14 reblath and junk PRI/DUO armor). If you generate your failstacks while trying to enchant other items, those failstacks can be considered less expensive to you, and therefore, you may want to go for more failstacks than is recommended.
How the system works(Simplified)
After processing your input, the program begins to loop through failstack values starting at 0. At each value, it checks to see if failstacking with DUO armor is cheaper than +14 armor by accounting for both the cost of blackstones, and the potential loss if your failstacks reset to zero. At each failstack tick, it checks the probability of your intended enchant succeeding, and the effective money lost on failure(either from downgrades or wasted materials). It checks the estimated cost, and if it’s the lowest cost recorded thus far, it sets it as the optimal value. The program continues looping until it hits the maximum amount of failstacks for the given enchant level. It finds the value and records it.
For values TRI and above, the program accounts for the cost of the level below it. For example, if you fail an attempt at TET, you drop to DUO. For this reason, the program has to consider the cost of getting back to TRI when deciding the effective cost of enchanting. If you have a 80% chance of failure, that means that it effectively is costing you 5x the cost to get TRI(from DUO) in potential loss alone. As you can see, this can get very expensive, which is why a huge amount of failstacks are recommended for higher enchants.
As the program continues it’s loop, it holds onto a record of the best values it finds. When it’s done, it displays the results to you.
To put it simply, the cost of enchanting can be described as:
cost= failstacking costs+ (cost of failure / probability of failure).