Invention

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Invention is the means by which you produce blueprint copies for Tech 2 items and ships in EVE, which can then be sold on the market, or (more popularly) be used to manufacture those items for sale or personal use in the game.

A player using the invention process takes a blueprint copy (BPC) for a Tech 1 item, adds certain specialized equipment, and attempts to create a BPC for a corresponding Tech 2 item. Although it sounds simple, invention can be very expensive and difficult to do successfully.

The (hopefully) created BPC will have a single run on a ship or rig BPC, and 10 runs on everything else. Regardless of the research performed on the T1 BPC, the result will have exactly ME 2% and TE 4%.[1] However, Runs, ME and TE levels on the created BPC can be adjusted using decryptors (see optional items below).

For a quick history of Tech II manufacturing, see the section at the bottom of this page.


Skills Required

You need to train several different types of skills in order to perform the invention process:

An inventor must have the proper encryption method skill and the two science skills trained, as required for each item, in order to start an Invention job. Higher skill levels of the encryption methods and science skills lead to a better chance of invention. In order to see which skills are required, look in the Invention tab in a blueprint for any Tech I item.

For example, this Inferno Rocket Blueprint (see right) requires:

  • Rocket Science I
    • Mechanics V
    • Science V
  • Electronic Engineering I
    • Science V
    • CPU Management V
  • Caldari Encryption Methods I
    • Hacking II
      • Electronics Upgrades III
        • CPU Management II
        • Power Grid Management II
      • Science III

You should train the encryption method skills to at least level 3, and the science skills at least to level 4, to have a good chance of invention success.

Other Related Skills

Laboratory Operation and Advanced Laboratory Operation will govern how many concurrent science jobs you can perform. Scientific Networking will govern from how many jumps away you can start science jobs.

Worth mentioning here, but completely useless to invention, are four further Science skills that are not used at all in invention. These are:

They are used exclusively in the manufacture of storyline modules, which are obtainable as BPCs from COSMOS missions. Note that the Sleeper Technology skill, despite its name, is not used for T3 production - you want Sleeper Encryption Methods (4x) for T3 production.

Items required

There are 3 mandatory items and 1 optional item needed for invention. To find out which items are required, look in the Invention tab in a blueprint for any Tech I item, or load the blueprint into the Industry window and choose Invention.

Mandatory Items

  1. Blueprint copy
    • You must have a T1 blueprint copy (BPC) of the T2 item you wish to create. Whether the invention job is successful or not, this BPC will be returned to you with one fewer run remaining on it. If it only has one run remaining, it will be consumed.
    • The ME, TE, and Runs Remaining on the input BPC do not impact the resulting invented BPC.
    • Not all items have T2 versions. To check this, open the Information window for a T1 item and look at the "Variations" tab. If a T2 version is shown there, then a T1 BPC for that item can be used to create a T2 BPC.
  2. Datacores
    • Each invention job will require two types of datacores. The number of datacores needed depends on the size of the object created. Small modules only require one datacore of each type while battleships require 32 of each type.
    • Datacores are primarily obtained through Factional Warfare loyalty point stores. They can also be 'farmed' from Research agents, although much less effectively, whilst some datacores can be found in exploration sites. However obtained, they tend to end up on the market, in the Manufacture & Research > Research Equipment > Datacores tab.
    • Whether the invention job is successful or not, these datacores will be consumed.

Optional Item

Selecting a decryptor
  1. Decryptors (recommended for big expensive invention jobs, like T2 ships)
    • Decryptors are an optional item that can be added to the invention process. Decryptors affect the invention chance of the process as well as the material efficiency, time efficiency, and the number of runs of the created T2 BPC. Decryptors will be consumed during the Invention process, successful or not.
    • Add the values from the decryptor to the base values to calculate the final outcome of the T2 BPC.
    • Excellent guide to decryptors: https://eve-prosper.blogspot.com/2013/07/everything-you-never-wanted-to-know.html NOTE: pre-Crius guide, use with caution
    • The different types of decryptors are:
      • Accelerant Decryptor
      • Attainment Decryptor
      • Augmentation Decryptor
      • Parity Decryptor
      • Process Decryptor
      • Symmetry Decryptor
      • Optimized Attainment Decryptor
      • Optimized Augmentation Decryptor


Decryptor Stats
Decryptor Probability Multiplier (% from 100%) Runs Material Efficiency Modifier Time Efficiency Modifier
Accelerant +20 +1 +2 +10
Attainment +80 +4 -1 +4
Augmentation -40 +9 -2 +2
Optimized Attainment +90 +2 +1 -2
Optimized Augmentation -10 +7 +2 0
Parity +50 +3 +1 -2
Process +10 0 +3 +6
Symmetry 0 +2 +1 +8

The invention process

Gather your BPC, all mandatory items, and any optional items you desire to use in a station, citadel, or engineering complex with invention facilities. Engineering complexes provide significant innate reductions (from 15% to 30% depending on complex size) to job duration and installation cost, and further reductions in time and cost are possible if the complex owner has installed the appropriate rigs.

Select the relevant BPC in the Industry window, and choose Invention on the activity list. The resulting window will tell you your invention chance, taking into account your skills and any selected optional items.

The optional items can be selected using the boxes on the left hand side of the Industry UI. All possible items will be listed, but items not available for use (i.e. not found in the input material location) will be faded out. You can use the decryptor selection box to look at how each different decryptor affects invention chance and outcome.

Be sure to select the correct Outcome, because some T1 BPCs can invent more than one T2 item (for example, a Scourge Rocket BPC invents both the Scourge Rage Rocket and Scourge Javelin Rocket BPCs, two different types of T2 rocket ammunition).

Invention ui.png

Once the job is complete and delivered, you do not receive any explicit notification if your job was successful. The only indication of success is that the 'Outcome' box in the Industry window actually contains your T2 BPC and an animated blue highlight - you will be able to find your new T2 BPO in the list of blueprints.

Job success.png

If your invention failed, however, the 'Outcome' box in the industry window will tint red, with an animated red bar across, and display a large Job failed text in red.

You can also see a summary of the success or failure of each job in the job listing after delivery.

Either way, your datacores, and optional decryptor will be consumed, and your BPC will be returned with one fewer run on it (unless it only had 1 run remaining).

T2 BPCs

Tech 2 blueprint copies for most items have 10 runs, +2% ME and +4% TE, unless modified by a decryptor.[1] T2 BPCs for ships and rigs have 1 run (again unless modified by a decryptor). The only activity you can do with a T2 BPC is to manufacture it, you cannot research or copy it.

Maximizing invention success

The chance for a successful invention is calculated by this formula:

[math] \displaystyle \text{Success chance} = \text{Base} \times \left( 1 + \frac{\text{Science skill 1} + \text{Science skill 2}}{30} + \frac{\text{Racial encryption method}}{40} \right) \times \left(1 + \frac { \text{Probability Multiplier of Decryptor} }{100\%} \right) [/math]

Base Chance:

  • All modules, rigs, and ammo have a base chance of 34%
  • All Frigates and Destroyers have a base chance of 30%
  • Cruisers, Battlecruisers, Mining Barges, Haulers, and intact Ancient Relics have a base chance of 26%
  • All Battleships have a base chance of 22%
  • Malfunctioning Ancient Relics have a base chance of 21%
  • Freighters have a base chance of 18%
  • Wrecked Ancient Relics have a base chance of 14%

As a summary of base chance, it's not difficult to get a good chance of success for modules with their base chance of 34%, but progressively more difficult for ships as their size increases. This is why investing in some decryptors is a good idea for Tech II ship invention jobs.

The effect of skills is equivalent to 3.333% per science skill level and 2.5% per encryption skill level.

You can find an invention success chance calculator here https://lazy-blacksmith.space/blueprint (Search up any inventible item, relic or BPC, and click the invent option), and another chance & profit calculator here: https://eve-industry.org.

You can experiment with different skill levels and decryptors to see how the probability changes. Use this to determine the levels of skills you wish to train, and whether you want to invest in decryptors. Remember that decryptors also affect max runs, ME, and TE of the final BPC, not just the chance of success.

Note that the following factors have no impact on the probability of invention success, nor the quality or number of runs on the output BPC:

  • ME, TE, or number of Runs on the BPC
  • How attractive, charming or brilliant you are :-)

Helpful guidelines

  • Science skills each improve the chance of success by more than the encryption skill, so since all are 5x rank skills, you should train science skills up first. A decent option is to initially train encryption to 3 and science skills to 4. Eventually, you should consider training encryption to 4 and the science skills to level 5 - especially the ones for ships - if you are going to be producing significant amounts of certain items.
  • Decryptors can virtually guarantee success, but can also be very expensive: in general, use the expensive ones only for big items like Tech II ships.
  • 'Symmetry' and 'Augmentation' type decryptors are often cheap, and add +2 or +9 (the latter at the cost of a lower invention chance) runs to the resulting BPC, so they can be very worthwhile (especially for ships and rigs, which only give 1-run BPCs by default) in driving down invention costs per manufacturing run, as well as increasing T2 manufacturing throughput by loosening the invention bottleneck.
  • To maximize profits from invention, you need to minimize your investment costs. This means using buy orders to purchase invention items in the market: datacores & decryptors. You'll also want to shop around to different systems to find the most affordable blueprint copying and invention facilities.
  • As you gain more experience in invention, you can experiment with different investments in your mix of skills and decryptors. If you are going to be a serious producer of Tech II items, you will eventually want to establish, or secure access to, an engineering complex - with significant time saving bonuses - for copying and invention jobs.

Useful links

Here are some more links (caution: may be out of date since recent invention changes from CCP, especially the success chance calculators):

In Ye Olde Days...

References

  1. ^ a b EVE Industry - All you want to know (Crius Expansion). By CCP Greyscale - EVE dev-blogs 2014-07-18
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