Hollow Knight: Silksong introduces a fresh combat system built around Crests and Tools, replacing the classic Charm system. Among these Tools, Flintslate stands out as an early offensive upgrade that lets Hornet imbue her attacks with fire. For players who want to burn through bosses or clear groups of enemies quickly, Flintslate is an essential pickup.

What is Flintslate?
Flintslate is a Red Tool in Silksong. Red Tools are active-use combat gadgets that consume charges when activated. Flintslate temporarily super-heats Hornet’s needle, setting her slashes ablaze and adding burn damage to each strike.
- Tool Type: Red (Offensive)
- Effect: Imbues the needle with fire, adding damage-over-time to slashes
- Charges: 3 uses before needing to refill at benches
- Best Use: Short bursts of high damage during openings or boss fights
Unlike passive buffs, Flintslate requires careful timing. Its fire effect doesn’t last long, so activating it just before a big attack window maximizes its impact.
How to Get Flintslate
Finding Flintslate requires some exploration and preparation in the Deep Docks region. Here’s the step-by-step path:
- Get a Simple Key
- The gate to Flintslate is locked. You’ll need a Simple Key, which can be purchased from Pebb the Merchant in the Bone Marrow for 500 Rosaries.
- Travel to the Deep Docks
- Head to the large cavern area in the Deep Docks. Look for the locked gate at the bottom-right side. Use your Simple Key to open it.
- Fight Through Enemy Chambers
- Inside, you’ll encounter chained platform sections filled with enemies. You can fight them head-on or use abilities like Swift Step to dash past.
- Be prepared for flying enemies as you climb the vertical areas.
- Climb to the Upper Path
- After progressing through two chained-platform chambers, climb upwards and take the top-left path.
- Claim the Flintslate
- At the end of this path, you’ll spot the Tool resting on a table or altar. Interact with it, then equip it at a Bench to start using it.
How Flintslate Works in Combat
When activated, Flintslate gives Hornet’s attacks a fire property. Each slash burns enemies briefly, stacking extra damage over time.
Best Scenarios for Flintslate
- Boss Battles:
Adds extra DPS during small openings, making phases shorter. - Crowd Control:
The burn effect can quickly wear down swarms of weaker enemies. - Aggressive Builds:
Perfect for players who prefer close-quarters combat with constant pressure.
Limitations
- Short Duration: The fire buff fades quickly, so it requires timing.
- Limited Charges: Only 3 uses per refill, so it’s best saved for key encounters.
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Quick Tips for Using Flintslate Effectively
- Save for Openings: Don’t waste a charge when dodging—activate it right before an offensive push.
- Pair with Mobility Tools: Swift Step and Clawline make it easier to reach enemies while the buff is active.
- Bench Strategy: Always refill before entering a boss fight. Three charges are usually enough to last through an entire encounter.
Flintslate is more than a damage booster—it’s a combat enhancer that sharpens your timing and elevates Hornet’s offensive potential. Found in the Deep Docks behind a Simple Key gate, it’s a must-have Tool for anyone looking to blend raw power with precision in Silksong. Play Now!