Cab-O-Sil Fumed Silica Thickener - One Revolver Surfboards

Cab-O-Sil Fumed Silica Thickener

For high-strength repairs and structural bonding, Cab-O-Sil is the industry's highest-quality brand of fumed silica. Proudly made in the USA, this thickening agent is essential for shapers and glassers who require a resin paste with superior flex characteristics and durability.

Unlike microspheres, Cab-O-Sil creates a "thixotropic" paste that is incredibly strong and resistant to cracking under stress. It is 100% compatible with both polyester and epoxy resins. Because it cures translucent, it is the ideal base for custom color work; simply add pigments to achieve a perfect white or matched color effect for your repair.

Key Features:

  • High Flexural Strength: Offers superior flex and impact resistance compared to Q-Cel.
  • Universal Compatibility: Works seamlessly with all surfboard resin systems (Epoxy & Poly).
  • Non-Sag Formula: Excellent for vertical surfaces and rail repairs where you need the resin to stay put.
  • Translucent Base: Cures clear/cloudy—perfect for mixing with pigments for color-matched repairs.

Pro Tip: Cab-O-Sil is much harder to sand than Q-Cel. Use it for the structural "meat" of a repair, but leave a small amount of room to cap it with a Q-Cel/Resin mixture for a much easier final sanding process.

Regular price$6.00
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Shipping calculated at checkout.

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Order Processing:

Most orders are processed within 1–3 business days (Monday–Friday).

Processing time does not include weekends or holidays.

Where Orders Ship From:

We work with a mix of in-house fulfillment and trusted partner suppliers.

Depending on the item, your order may ship from:


  • Southern California (One Revolver Surfboards HQ)

  • A partner warehouse through Shopify Collective

This helps us offer faster shipping and a wider range of high-quality products.

Shipping Details:


  • Tracking numbers are emailed automatically once your order ships

  • Delivery times vary by carrier and product type (usually 2–7 business days)

  • Multi-item orders may arrive in separate packages

  • Apparel, accessories & small items ship via USPS, UPS, or partner carriers

Surfboard Shipping:


  • Surfboards ship via freight carrier with full insurance

  • Boards are packaged securely for safe transit

  • Typical delivery time: 5–12 business days, depending on region

International Shipping:


  • Delivery times and rates shown at checkout

  • Customs and import fees may apply based on your country

If you have any questions about your order or tracking, feel free to reach out anytime at info@onerevolversurfboards.com.

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