• Subnautica Thermoblade Glow-in-the-Dark and Survival Knife 3D Printed Prop
  • Subnautica Thermoblade Glow-in-the-Dark and Survival knife Glow 3D Printed
  • Subnautica Survival Knife Prop – Standard 3D Printed Version
  • Subnautica Survival Knife Prop – Standard 3D Printed Version
  • Subnautica Knife Props Held in Hand – Life-Size Size Comparison
  • Glow-in-the-Dark Survival Knife – Subnautica Fan-Made Replica
  • Glow-in-the-Dark Survival Knife – Subnautica Fan-Made Replica
  • Glow-in-the-Dark Survival Knife – Subnautica Fan-Made Replica
  • Subnautica Knife Props Held in Hand – Life-Size Size Comparison
  • Subnautica Thermoblade Glow-in-the-Dark 3D Printed Prop
  • Subnautica Thermoblade Glow-in-the-Dark 3D Printed Prop
  • Subnautica Thermoblade Glow-in-the-Dark 3D Printed Prop
  • Subnautica Knife Props Held in Hand – Life-Size Size Comparison
  • Subnautica Knife Tools Glow In The Dark Options
Subnautica Thermoblade Glow-in-the-Dark and Survival Knife 3D Printed Prop
Subnautica Thermoblade Glow-in-the-Dark and Survival knife Glow 3D Printed
Subnautica Survival Knife Prop – Standard 3D Printed Version
Subnautica Survival Knife Prop – Standard 3D Printed Version
Subnautica Knife Props Held in Hand – Life-Size Size Comparison
Glow-in-the-Dark Survival Knife – Subnautica Fan-Made Replica
Glow-in-the-Dark Survival Knife – Subnautica Fan-Made Replica
Glow-in-the-Dark Survival Knife – Subnautica Fan-Made Replica
Subnautica Knife Props Held in Hand – Life-Size Size Comparison
Subnautica Thermoblade Glow-in-the-Dark 3D Printed Prop
Subnautica Thermoblade Glow-in-the-Dark 3D Printed Prop
Subnautica Thermoblade Glow-in-the-Dark 3D Printed Prop
Subnautica Knife Props Held in Hand – Life-Size Size Comparison
Subnautica Knife Tools Glow In The Dark Options

Subnautica Thermoblade & Survival Knife Props

£19.99
£19.99
Colour:
Subnautica Thermoblade Glow-in-the-Dark and Survival Knife 3D Printed Prop Subnautica Thermoblade Glow-in-the-Dark and Survival knife Glow 3D Printed Subnautica Survival Knife Prop – Standard 3D Printed Version Subnautica Survival Knife Prop – Standard 3D Printed Version Subnautica Knife Props Held in Hand – Life-Size Size Comparison Glow-in-the-Dark Survival Knife – Subnautica Fan-Made Replica Glow-in-the-Dark Survival Knife – Subnautica Fan-Made Replica Glow-in-the-Dark Survival Knife – Subnautica Fan-Made Replica Subnautica Knife Props Held in Hand – Life-Size Size Comparison Subnautica Thermoblade Glow-in-the-Dark 3D Printed Prop Subnautica Thermoblade Glow-in-the-Dark 3D Printed Prop Subnautica Thermoblade Glow-in-the-Dark 3D Printed Prop Subnautica Knife Props Held in Hand – Life-Size Size Comparison
Subnautica Thermoblade Glow-in-the-Dark and Survival Knife 3D Printed Prop Subnautica Thermoblade Glow-in-the-Dark and Survival knife Glow 3D Printed Subnautica Survival Knife Prop – Standard 3D Printed Version Subnautica Survival Knife Prop – Standard 3D Printed Version Subnautica Knife Props Held in Hand – Life-Size Size Comparison Glow-in-the-Dark Survival Knife – Subnautica Fan-Made Replica Glow-in-the-Dark Survival Knife – Subnautica Fan-Made Replica Glow-in-the-Dark Survival Knife – Subnautica Fan-Made Replica Subnautica Knife Props Held in Hand – Life-Size Size Comparison Subnautica Thermoblade Glow-in-the-Dark 3D Printed Prop Subnautica Thermoblade Glow-in-the-Dark 3D Printed Prop Subnautica Thermoblade Glow-in-the-Dark 3D Printed Prop Subnautica Knife Props Held in Hand – Life-Size Size Comparison Subnautica Knife Tools Glow In The Dark Options

Subnautica Thermoblade & Survival Knife Props

£19.99
Subnautica Thermoblade Glow-in-the-Dark and Survival Knife 3D Printed Prop

Frequently Bought Together

Total price£21.98

🔪 Subnautica Prop Replicas – Survival Knife & Thermoblade (Life-Size Display)

Gear up like a true survivor with these life-size Subnautica Prop Replicas — full-scale models of the iconic Survival Knife and Thermoblade, 3D printed in durable, eco-friendly PLA.

Perfect for cosplay, display, or any Subnaut who’s ever shouted “I don’t need a Seamoth, I’ve got a knife!” — these replicas are available in standard and glow-in-the-dark variants for that extra sci-fi edge.

✨ Available Options

  • 🔪 Survival Knife – Standard

  • 🌌 Survival Knife – Glow-in-the-Dark

  • 🔥 Thermoblade – Glow-in-the-Dark Blade

Each knife is crafted with smooth detail, bold shapes, and accurate proportions based on their in-game models.

⚙️ Features

  • Based on Subnautica’s iconic Survival Knife & Thermoblade

  • Life-size replicas 25 cm

  • Glow-in-the-dark filament used for Thermoblade and glowing knife variants

  • Eco-friendly PLA plastic construction

  • Lightweight and safe for cosplay or indoor display

  • Handmade in the UK – printed to order

📦 Why Buy From CoolGamingStuff?

  • 🎮 Designed by Subnautica fans, for fans

  • 🚚 Fast UK shipping and protective packaging

  • ✋ Hand-finished, high-quality prints – not mass-produced

  • 💡 Glow options emit blue-white light after charging under sunlight or LED

📏 Specifications

  • Material: PLA (3D printed plastic)

  • Size: Life-size – approx 25 cm

  • Colour Options:

    • Thermoblade – Glow-in-the-dark blade

    • Survival Knife – Standard or Glow-in-the-dark blade

  • Type: Display/Cosplay prop – not a toy or weapon

❓ FAQs

Q: Do the glow-in-the-dark versions actually glow?
🟦 Yes! Charge under light and they’ll glow in low-light settings.

Q: Are these props dangerous or sharp?
🔒 They're lightweight, blunt, and safe for cosplay or shelf display, But please be cautious in any case.

🧰 Tools of the Deep – Survival Knife & Thermoblade in Subnautica

In Subnautica, survival isn’t just about swimming — it’s about being prepared. And nothing’s more iconic than these two humble tools:

🗡️ The Survival Knife – The Beginner’s Lifeline

Your first and most trusted tool.
Simple. Titanium. Deadly… to creepvine.

  • Craft it early and never leave your base without it

  • Harvest plants, defend yourself, and stay fed

  • A symbol of that first terrifying, empowering step into the unknown

🔥 The Thermoblade – The Ultimate Upgrade

Unlockable via the Modification Station, the Thermoblade turns your basic knife into a futuristic heat blade that:

  • 🔥 Cooks fish instantly

  • 🌟 Glows with Alterra energy tech

  • 💪 Symbolizes your evolution from newbie to Void-dwelling badass

🧱 Slice with Style – Display or Cosplay Ready

Whether you’re dodging Reapers, exploring Lava Zones, or just want to look like a survival expert at a con...

💠 These knives are the ultimate Subnautica accessory.

Customer Reviews

Based on 6 reviews
83%
(5)
0%
(0)
0%
(0)
17%
(1)
0%
(0)
X
X.W.

Just like in game

T
T.M.

I love subnautica

H
Hayden

Looks good, just doesnt glow

J
Jacob Sabin
Truly Beautiful work!

This Thermoblade Knife is awesome looks amazing, the survival Knife is equally cool! and makes you feel like you reached into the screen and pulled it out of the game and it even glows! it Arrived on time and in great shape I will be buying from this seller again!

(They even included an extra item in my purchase! which was very kind of them, and I have never seen another seller do this before, they are truly people who care about their customers!)

G
G.W.
Subnautica thermo blade

Great seller shipped quickly and accurate description and extremely great communication and worth every penny definitely getting the other 2 blades

12

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