Let's Play Warframe (166) Mask of the Revenant - Part 1: Getting There - Quill Standing - YouTube
Warframe: The Best Voidplume Farm
Make a new Amp or continue farming QUill standing - Players helping Players - Warframe Forums
Let's Play Warframe (243) Amp Upgrade with the Quills - Part 1: Quill Standing - YouTube
Please remove the daily cap after reaching max rank on the Quills. Farming 2-3 nights on the Plains makes you have to wait at least a week to deposit all the cores