Sharpening Card : Credit Card Sharpener and Maintenance Tool
The Sharpening Card : A Credit Card Knife Sharpener That Fits in Your Wallet
The Grim Workshop Sharpening Card is a compact EDC knife sharpener designed to maintain and restore cutting edges when traditional sharpening tools are not available.
It solves a practical problem: blades lose effectiveness long before you get back to a bench or full sharpening setup. This card provides a manual, controlled way to touch up pocket knives, tools, and small blades in the field without bulk or power.
This sharpening card fits into wallets, tins, packs, and kits, and can be used flat or shaped to match the blade you are working on.
→ Commonly paired with cutting tools from the Survival Cards Collection and everyday blades in the Knifes and Blades Collection.
Card Sharpener Tool Specs:
- One sharpening card
Credit card sized format for easy carry
Multiple grit options available
Formable design for non standard blade shapes
Can be used flat or shaped for detail work
Compatible with Grim Workshop survival cards for added stability
This is a manual knife sharpener, not a powered or pull through system.
→ Complements other knife sharpening tools in the EDC Tools Collection.
Why the Sharpener Card Exists
Sharp tools are safer and more effective than dull ones.
This sharpening card exists to provide manual sharpening capability in a flat, portable format. Unlike rigid sharpeners, it can adapt to different blade shapes and edge profiles, making it useful for standard edges, curved blades, and serrations.
Because it can be attached to the back of other Grim Workshop cards, it also functions as a stable, flat sharpening surface similar to a small whetstone when needed.
It is a layer of readiness that stays with you when bulk is not an option.
→ Learn more about blade maintenance in our Knife Care and Sharpening Skill Guides.
How the Sharpening Card Fits into a Kit
This sharpening card is designed for maintaining an edge.
On its own, it works as a lightweight pocket knife sharpener for edge touch ups during everyday carry, travel, or outdoor use.
When paired with a larger kit, it becomes a blade maintenance backup, ensuring knives and tools remain functional even when primary sharpening equipment is unavailable.
Common placements include:
Everyday carry kits for routine edge upkeep
Outdoor and bushcraft kits for blade maintenance
Emergency kits where sharp tools matter
Vehicle kits for tool maintenance on the go
→ Store flat inside a Survival Kit Tin or alongside knives from the EDC Tools Collection.
This tool does not replace a full sharpening bench. It keeps tools working until you reach one.
How to Use the Sharpener Card
Grim Workshop tools are supported by skill guides that explain:
How to sharpen knives safely by hand
How grit selection affects edge performance
When to touch up versus fully reprofile an edge
How to maintain serrations and curved blades
The guides teach the technique.
The card provides the surface.
→ Explore sharpening fundamentals in our Knife Sharpening Skill Guides.
Education is part of the product.
FAQ Sharpener Card Frequently Asked Questions
WHY CHOOSE GRIM WORKSHOP'S SURVIVAL TOOLS?
INNOVATIVE DESIGN
We focus on creating multi-functional tools that maximize utility while minimizing space.
Expert Craftsmanship
Our tools are made in the USA with the highest standards of quality and durability.
made in the usa
Crafted in the USA, our products deliver premium durability and American craftsmanship.
Field-Tested Reliability
Our tools are trusted by outdoor enthusiasts, survivalists, and bushcrafters around the world.
ABOUT GRIM WORKSHOP
Grim Workshop is dedicated to creating innovative, durable, and compact everyday carry (EDC) and survival tools that you can rely on in any situation. With nearly a decade of experience, we pride ourselves on crafting tools that combine practicality with ingenuity, ensuring they meet the highest standards of quality and durability. Made in the USA, our products are designed to be both effective and convenient, fitting seamlessly into your daily life or survival kit. Whether you're a seasoned outdoor enthusiast or someone who values preparedness, Grim Workshop provides the tools you need to stay ready for anything.
family owned and operated
Sharpening Card : Credit Card Sharpener and Maintenance Tool is proudly crafted in the USA, ensuring that every piece meets the highest standards of quality and durability. Made with precision and care, this card embodies the best of American craftsmanship, providing you with a reliable and robust survival tool that you can trust in the most demanding situations. When you choose this card, you're not just getting a tool—you're getting a piece of equipment built to last.
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Sharpening Card : Credit Card Sharpener and Maintenance Tool
$4.99