Shortly after the release of patch V6.15 Riot introduced a limited time (1st - 16th Aug.) special crafting that can be used to create summoner icons, special loading screen champion cards and skins related to the PROJECT theme. [1]
It follows the Hextech Crafting ideology but uses different kind of materials. Chests are called caches and don't need keys to be opened. Blueprints are like chests but instead of opening with a key they are fused with numerous cores to produce an item.
All the items can also be bought by 
Riot Points from the shop.
Cache
Similar to a chest but unlocked thus no keys are used unlike in Hextech Crafting.
Starter Cache
By buying the event exclusive Summoner icons from the shop (
750 or 75) you gain the summoner icon and a champion specific PROJECT Cache. Each of these caches can be obtained only once.
EM Caster Cache
The cache inholds:
- EM Caster summoner icon
- PROJECT: Ashe Cache
Decrypter Cache
The cache inholds:
- Decrypter summoner icon
- PROJECT: Ekko Cache
Hyper Edge Cache
The cache inholds:
- Hyper Edge summoner icon
- PROJECT: Katarina Cache
DISRUPTION Cache
The cache inholds:
- Disruption summoner icon
- PROJECT: Disruption Cache
Augment Cache
These caches can be either bought from shop for 295 or by combining three augment cache fragments. They are the main source for crafting materials.
Cache contains:
- Two PROJECT Core's
- Possibly an Augment Cache Fragment.
- Loot shard (same as Hextech Chest)
- a skin shard
Augment Cache Fragment
Three of these can be forged into an augment cache.
PROJECT Cache
These caches that are found inside of the starter caches contain the first materials for fusing the blueprints. Addition to the blueprints they also contain:
PROJECT: Ashe Cache
In addition to the items found in a PROJECT cache it contains the PROJECT: Ashe First Strike Icon Blueprint 
PROJECT: Ekko Cache
In addition to the items found in a PROJECT cache it contains the PROJECT: Ekko First Strike Icon Blueprint 
PROJECT: Katarina Cache
In addition to the items found in a PROJECT cache it contains the PROJECT: Katarina First Strike Icon Blueprint 
PROJECT: Disruption Cache
Considered as the ultimate cache as it is the only one containing surely a blueprint for a project skin. Available 9th - 16th of Aug. for 1500 or 150 and can be bought only once containing the following items
- Seven PROJECT Core's
- Two Augment Cache Fragment's
- PROJECT: OVERDRIVE Skin Shard Blueprint
Core
Project crafting has only one material, Core, that are used to fuse, build up or power the various blueprints. Number of cores needed varies depending what is opened. Main source for them is the augment cache.
Blueprint
Blueprints are opened by fusing them with seven to eleven cores to forge its content.
Ashe First Strike Icon Blueprint
Fuses with seven 
cores to unlock Ashe first strike icon to unlock first strike loading screen champion borders. 
Ekko First Strike Icon Blueprint
Fuses with seven cores to unlock Ekko first strike icon to unlock first strike loading screen champion borders. 
Katarina First Strike Icon Blueprint
Fuses with seven cores to unlock Katarina first strike icon to unlock first strike loading screen champion borders. 
OVERDRIVE Skin Shard Blueprint
Fuses with eleven cores to unlock random project skin shard not including the ones introduced in patch V6.15 (Project: Ashe, Ekko & Katarina)
