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    apnea-scrap/apnea-scrap-lab
    • Home
    • Projects
      • Short Fins
        • V1 - Power Fins
      • Medium Fins
        • V1 - Training Fins
      • Neck Weight
        • V1 - Modular Lead Tube
      • Nose Clip
        • V1 - Bike Spoke
      • Bending Steel Wire
        • V1 - Pliers
      • Choosing Bi-fin Foot Pockets
        • V1 - Short Rails
      • Coating Steel Wire
        • V1 - Heat Shrink Tubing
      • Creating Laminating Base
        • V3 - Cardboard Support
        • V2 - Plastic Wedges
        • V1 - Wood Support
      • Creating Modular Weights
        • V1 - Hook Buckle Inner Tube
      • Creating Neck Collar
        • V1 - Lead Tube
      • Cutting Cured Carbon
        • V1 - Junior Hacksaw
      • Cutting Template
        • V1 - Paper Laminate
      • Encoding Fin Properties
        • V1 - Hydrodynamic Resistance Codes
      • Finishing Carbon
        • V1 - Epoxy and Clear Coat
      • Gluing Fin Rails
        • V2 - Marine Adhesive
        • V1 - Two Part Plastic-to-Carbon Adhesive
      • Laminating Carbon
        • V1 - Wet Layup
      • Measuring Flex
        • V2 - Kitchen Scale Test
        • V1 - Weight Belt Test
      • Measuring Vacuum
        • V2 - Trapped Balloon
        • V1 - Syringe Gauge
      • Predicting Flex
        • V1 - Tapered Cantilever Beam
      • Vacuum Bagging Carbon
        • V2 - Edge-Sealed Bagging
        • V1 - Enclosed Bagging
    • Materials
      • Acrylic Sheet
      • Bifin Foot Pockets
      • Bike Inner Tube
      • Breather Cloth
      • Butyl Sealing Tape
      • Carbon Fiber Fabric
      • Clear Coat Spray
      • Hook Buckle
      • Laminating Epoxy System
      • Liquid Electrical Tape
      • Loose Lead
      • Marine Adhesive
      • PVA Release Agent
      • Peel Ply
      • Plastic-to-Carbon Adhesive
      • Quick Release Buckle
      • Rubber Fin Rails
      • Stackable Plastic Wedges
      • Vacuum Bagging Kit
    • Blog
      • Tags
        • November 2025
        • August 2024
        • Build Planning
        • Lab Updates
        • Releases
        • Research Notes
    • Contact

    DIY Freediving Gear

    For the makers beneath the surface

    Illustration of the compress short fins project

    Carbon Power Fins

    Build → ~£135 per pair
    Illustration of the modular neck weight

    Modular Neck Weight

    Build → ~£60 collar + modules
    Illustration of the low-profile nose clip

    Strong-Grip Nose Clip

    Build → ~£3 per clip

    Ready for more? Dive into every iteration we have documented so far

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