1. Blueprint Materials Drafting
Once you Draft a Blueprint Material, you will immediately receive the corresponding Blueprint Material and Trade Coins. (You may use Blueprint Material in the Blueprint Factory to manufacture Blackwing Blueprints. You may use Trade Coins to purchase items in the Blueprint Trade event or redeem rewards at the Trade Coin Store.)
 
There is a cooldown between each Draft, and the length of this cooldown depends on the quality of Blueprint Material drafted.
 
2. Blueprint Chests Manufacturing
 
Choose the Blueprint Chest you wish to Manufacture, and if you have sufficient Blueprint(s) and your Lab is at a certain level, you may manufacture the Blueprint Chest. This process has no wait time and you will receive the corresponding Blueprint Chest immediately.

The quality of the Manufactured Blueprint Chest is randomly generated, and you can see the chances of getting each quality of Blueprint Chest in the FAQ (After you choose a Blueprint Chest to Manufacture).

3. Blueprint Chest’s Purpose

Use your Blueprint Chests in the Blueprint Trade event located in the “Bonus” Section or use it directly to obtain the corresponding Blueprints. Head to the Unit Modification (Requires HQ level 22 or higher) in your Lab to Equip Blueprints.

Note: After you use a Blueprint Chest directly, you will no longer be able to trade it in the Blueprint Trade event.