Hollow Knight Silksong: How to Get Volt Filament

In Hollow Knight: Silksong, Act 3 introduces several powerful tools to enhance Hornet’s abilities. One of the most valuable upgrades is the Volt Filament, a purple tool under the Blue Tools category. When paired with a dart, it generates an electric charge that increases Hornet’s attack power.

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If you’re wondering how to get Volt Filament in Hollow Knight Silksong, this guide explains the exact location, requirements, and the strategy to defeat the mini-boss guarding it.

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Where to Find Volt Filament in Silksong

Volt Filament can only be unlocked in Act 3. You’ll need to travel to the Sands of Karat and locate a hidden section at the vertical middle of the map.

Requirements:

• Clawline Skill – Needed to climb into the upper section of the Sands of Karat.

Once you reach the top, you’ll spot a pink glowing entrance. This hidden area, called Voltnest, is home to the mini-boss Voltvyrm. Defeating it will reward you with Volt Filament.

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How to Defeat Voltvyrm

The Voltvyrm battle is tricky because the environment itself is dangerous:

• The walls of Voltnest are electrified and deal 2 masks of damage on contact.
• Voltvyrm hides on the ceiling, launching pillar-shaped electric shocks across the arena.

Combat Strategy:

1. Dodge the electric pillars by timing your jumps and dashes.

2. Attack after cooldowns – once Voltvyrm finishes its electric strikes, you’ll have a short window to deal damage.

3. Handle the pink orbs carefully – at later stages, Voltvyrm summons pink orbs that explode into electricity. Stay in a corner until they disperse before moving back in to attack.

4. Stay patient – the fight speeds up over time, but focusing on dodging first and striking second will ensure victory.

After landing the final blow, a purple light will descend. Interact with it to obtain the Volt Filament.

Why Volt Filament is Worth It

The Volt Filament significantly boosts Hornet’s toolkit by adding an electric charge to darts, making them deadlier against tougher enemies. Combined with Silk skills, it enhances both offense and utility, making it one of the best upgrades in Act 3.

Unlocking the Volt Filament in Hollow Knight Silksong is challenging, but the reward is well worth the effort. By defeating Voltvyrm in the Sands of Karat, you’ll gain access to one of the game’s most powerful Silk tools, helping you survive the punishing difficulty of Act 3 and beyond.