Work Sharp Guided Field Sharpener. See at Amazon See at Cabela's. Best Portable. Spyderco Tri-Angle Sharpmaker. See at Amazon see at Sportsman's Warehouse. The 6 Best Knife Sharpeners.

Get the Work Sharp Guided Field Sharpener on sale at Amazon for $35. The portable knife sharpener is great for hunting, fishing, and pocket knives, along with other tools.