Hallownest is a world defined by its lethal environment, where the difference between surviving a boss encounter and being sent back to the last bench often rests on the sharpness of a single blade. For the Knight, that blade is the Nail. While early progress relies on learning enemy patterns and mastering the dash, the mid-to-late game demands raw power. This power is gated behind a rare, icy metal known as Pale Ore. There are exactly six pieces of Pale Ore hidden across the sprawling ruins of the kingdom, and finding them is mandatory for anyone looking to forge the Pure Nail.

Upgrading the Nail does not just shorten boss fights; it fundamentally changes how the Knight interacts with common enemies. Higher damage output allows for "one-shotting" smaller pests that would otherwise clutter the screen, effectively acting as a defensive upgrade by removing threats before they can strike. To reach the pinnacle of combat efficiency, understanding the location, requirements, and optimal acquisition order of these six ores is the most effective way to prepare for the challenges of Godhome and the late-game trials.

The Nailsmith and the path to the Pure Nail

Before hunting for ore, it is necessary to locate the only individual capable of refining it. The Nailsmith resides in an isolated hut on the far western edge of the City of Tears. Reaching him usually requires traversing the rainy platforms of the city or descending from the Fungal Wastes.

The progression of the Nail follows a strict curve of increasing costs in both Geo and Pale Ore. It is important to note that the very first upgrade, which transforms the Old Nail into the Sharpened Nail, requires no ore at all—only 250 Geo. This initial step increases the base damage from 5 to 9, which is nearly a 100% boost and should be the priority for any new player reaching the city.

Following the first upgrade, the requirements become steeper:

  • Channelled Nail: Requires 1 Pale Ore and 800 Geo. Damage increases from 9 to 13.
  • Coiled Nail: Requires 2 Pale Ore and 2,000 Geo. Damage increases from 13 to 17.
  • Pure Nail: Requires 3 Pale Ore and 4,000 Geo. Damage increases from 17 to 21.

To fully maximize the weapon, a total of 6 Pale Ore and 7,050 Geo is required. Because the damage calculation in Hollow Knight affects how many hits it takes to stagger bosses and how much Soul is gained per strike indirectly through combat duration, these upgrades are the single most impactful character improvements available.

Location 1: The Mawlek Sentinels of the Ancient Basin

The Ancient Basin is a desolate, monochrome region located at the very bottom of Hallownest. To find the Pale Ore here, one must head west from the Tram Station. This area is characterized by its eerie silence and the presence of Infected Balloons that plague the air.

Deep within the western reaches of the Basin, guarded by a pair of Lesser Mawleks, lies a discarded piece of Pale Ore. The challenge here is not the terrain but the combat. Lesser Mawleks spit orange infection in arcs and have a surprising reach with their claws. For players arriving early, these enemies can be formidable due to their high health pools. The most effective strategy involves using spells like Vengeful Spirit or Desolate Dive to deal damage from a distance or while invincible. Once the two sentinels are defeated, the path to the left opens, revealing the ore sitting plainly on the ground. This is often the first or second piece of ore players collect due to its relatively straightforward location.

Location 2: The Summit of Hallownest’s Crown

High above the mines of Crystal Peak sits a lonely statue overlooking the remains of the kingdom. This area, known as Hallownest’s Crown, contains one of the most atmospheric pieces of Pale Ore in the game. Reaching it is a test of platforming skill and vertical mobility.

You generally need the Mantis Claw to scale the vertical shafts of the Crystal Peak, but the Monarch Wings (double jump) are highly recommended to reach the very top. The climb involves navigating corridors filled with Crystal Crawlers and beams of concentrated light. Once you reach the highest point of the peak, move to the far left. There, embedded in the base of a massive statue dedicated to the Radiance, is a shimmering shard of Pale Ore. The view from this height provides a rare moment of clarity in the cramped world of Hallownest, but the real reward is the metal that brings you one step closer to the Coiled Nail.

Location 3: The Seer’s Reward for Essence

Unlike other pieces of ore that are found in the environment, the third piece is a reward for spiritual progression. After acquiring the Dream Nail in the Resting Grounds, the Knight is tasked by the Seer to collect Essence—the lingering memories of the world.

The Seer will grant a piece of Pale Ore once the Knight has collected 300 Essence. This is a relatively low threshold that can be met quickly by defeating one or two Dream Warriors, such as Xero in the Resting Grounds or Elder Hu in the Fungal Wastes. Alternatively, hitting Whispering Roots and collecting the scattered orbs across the map can easily push the total over 300. Returning to the Seer with this amount triggers a dialogue where she offers the ore as a token of your progress. This method is highly recommended for players who prefer to avoid difficult platforming or high-intensity combat in the early game.

Location 4: The Grubfather’s Gratitude

Rescuing the captured Grubs scattered throughout the world is more than just a completionist task; it is a primary source of rare materials. The Grubfather, located in the top-left corner of the Forgotten Crossroads, provides rewards based on the number of jars broken and Grubs freed.

To earn the Pale Ore from the Grubfather, the Knight must rescue 31 of the 46 Grubs hidden in Hallownest. This is a long-term goal that requires significant exploration. By the time 31 Grubs are rescued, the player likely has access to most of the map and the Collector’s Map (found in the Tower of Love), which reveals the locations of all remaining Grubs. Rescuing these creatures often involves solving small environmental puzzles or defeating minor enemies. Once the 31st Grub is safe, returning to the Crossroads will find the Grubfather showering the Knight with various rewards, with the Pale Ore being the final high-tier item before the endgame charms.

Location 5: The Mimic Lair in Deepnest

Deepnest is widely considered the most unsettling area of Hallownest, and the Pale Ore hidden here is guarded by one of the game’s most unique bosses: Nosk. To find this ore, one must locate a breakable wall in the room to the left of the Hot Spring in the center of Deepnest.

Following a shadowy mimic of the Knight through a series of cramped, spider-filled tunnels leads to a larger chamber. Here, the mimic reveals its true form—Nosk, a multi-legged horror that mirrors the Knight’s appearance. The fight against Nosk requires careful positioning; the elevated platform in the center of the room provides a "safe corner" where the Knight can hide from Nosk’s charging attacks. After defeating the beast, the room further to the right contains a graveyard of previous victims and a single, precious piece of Pale Ore. This acquisition is often the most difficult for players who struggle with the claustrophobic and unpredictable nature of Deepnest.

Location 6: The Trial of the Conqueror

The final piece of Pale Ore is a reward for those who prove their mettle in the arena. In the far east of the Kingdom’s Edge lies the Colosseum of Fools, a place where warriors fight for glory and Geo.

There are three trials in the Colosseum, and the Pale Ore is the reward for completing the second one: The Trial of the Conqueror. This trial is significantly more difficult than the first, consisting of 17 waves of enemies, including heavy fools, winged sentries, and battle obbles. The terrain shifts during the fight, with floors disappearing and spikes emerging from the ground. Mastery of Great Slash or Dash Slash (Nail Arts) is incredibly useful here, as is the Dream Shield or Quick Focus charm. Successfully surviving the final wave and the duo of Great Hopper bosses will earn the Knight the final piece of Pale Ore needed for the Pure Nail. This trial represents the ultimate test of combat proficiency before the final upgrade.

Strategic order of acquisition

Collecting all six pieces of Pale Ore can be done in various orders, but an efficient path can save hours of backtracking. Most experienced players suggest the following priority:

  1. 300 Essence (Seer): This is often the easiest to obtain shortly after getting the Dream Nail. It requires no difficult bosses or advanced platforming.
  2. Ancient Basin: If the player has the Tram Pass, this ore is a quick detour while exploring the lower levels.
  3. Hallownest’s Crown: Can be grabbed as soon as the Mantis Claw and Crystal Heart are obtained, though double-jump makes it trivial.
  4. The Grubs: This happens naturally over time. If you explore thoroughly, you will likely hit 31 Grubs by the mid-game.
  5. Nosk: Reserved for when the player feels comfortable navigating the dark of Deepnest.
  6. Colosseum of Fools: Usually the final piece, as the Trial of the Conqueror is a significant jump in difficulty and is best approached with at least the Coiled Nail.

By following this order, the Knight stays ahead of the power curve, ensuring that the weapon's strength matches or exceeds the health pools of the bosses in each new area. Attempting the Trial of the Conqueror with a Sharpened Nail, for example, is technically possible but unnecessarily punishing.

The impact of the Pure Nail on combat

Forging the Pure Nail is a milestone that transforms the gameplay experience. With a base damage of 21, the Knight becomes a force of nature. When combined with the Fragile Strength (or Unbreakable Strength) charm, which provides a 50% damage boost, the Nail hits for a staggering 31 damage per strike.

This level of power is particularly noticeable against late-game bosses like the Watcher Knights or the Hollow Knight itself. Many bosses have "stagger" thresholds based on the number of hits taken. By increasing the damage per hit, the Knight can reach these thresholds faster, creating more windows for healing or unleashing high-damage spells like Abyss Shriek. Furthermore, the Pure Nail is almost a requirement for the Pantheons in Godhome, where boss health is scaled and speed is essential for survival.

The fate of the Nailsmith

Once the final piece of Pale Ore is handed over and the Pure Nail is forged, the Nailsmith’s character arc reaches its conclusion. This is one of the most poignant narrative moments in the game, involving a choice that has no mechanical impact but significant emotional weight.

After achieving his life's work—creating the perfect weapon—the Nailsmith steps outside his hut. He laments that he has nothing left to strive for and asks the Knight to strike him down with the very blade he just perfected.

  • If the Knight obeys: One strike with the Pure Nail will end the Nailsmith's life, and his body will fall into the waters of the City of Tears. This grants a specific Hunter’s Journal entry.
  • If the Knight walks away: If the player refuses to kill him and simply leaves the area, the Nailsmith eventually relocates to the hut of Nailmaster Sheo in Greenpath. There, the two find a new purpose in life through art and companionship.

Choosing the latter path is generally considered the "better" ending for the character, proving that even in a world as bleak as Hallownest, there is life beyond one's profession. Regardless of the choice, the Pure Nail remains in the Knight's possession, a testament to the rare metal gathered from the deepest and highest corners of the world.

Maximizing the potential of Pale Ore

For those aiming for the 112% completion mark, every piece of Pale Ore is a vital checkbox. Beyond the raw damage, the upgrades represent the Knight's journey from a weak wanderer to the savior (or successor) of a fallen kingdom. The scarcity of the ore ensures that the player must engage with every facet of the game’s design: combat, platforming, collection, and exploration.

When preparing for the final stretch of the journey, remember that the Nail is only as good as the charms supporting it. Pairing a maxed-out Nail with Quick Slash, Mark of Pride, and Strength creates a "Nail Build" that is capable of shredding through almost any obstacle. The hunt for Pale Ore may be arduous, involving treks through the dark of Deepnest and the heights of Crystal Peak, but the result is a weapon that truly belongs to a legendary warrior of Hallownest. Keep your eyes on the shimmering white glint of the metal; it is the key to mastering the shadows that lie ahead.