Bring a loadout that can complete Capture and reach extraction.
Target Lith C15 by its full name; other Lith relics are not the target.
Farming steps
Launch Hepit and follow the objective marker to the Capture target.
Complete Capture and proceed to extraction.
Finish the mission and inspect its reward for Lith C15.
If the relic is different, repeat Hepit and inspect the next reward.
When Lith C15 is secured, select it for a suitable Void Fissure.
Collect reactant and complete the fissure objective to open the relic.
Choose the Corufell Prime Stock blueprint if it appears among the rewards.
Hepit is a Lith relic route, not a guaranteed C15 reward; use the result screen to track progress.
If you are farming other Void resources at the same time, collect them along the way without losing track of the relic target.
Repeat, collect and use
Repeat the Capture route until Lith C15 is collected; no weekly limit is stated. Keep opening Lith C15 relics only while the Stock blueprint is still needed.
Common mistakes
Treating any Lith relic as the target: check for the exact C15 identifier.
Expecting the Stock blueprint at Hepit extraction: the Capture reward is a relic, and the part requires a fissure opening.
Stopping after one relic opening if the Stock is still missing; the desired part is not guaranteed.
When to stop or switch
Stop Hepit runs once Lith C15 is in inventory. Stop the full farm when the Corufell Prime Stock blueprint is obtained.