Knife Sharpening

To keep your knife sharp, Gerber recommends sharpening it on a regular basis. A dull knife is more dangerous than a sharp one. Over-sharpening the blade might cause it to deteriorate prematurely.

Use a round sharpener or a similar type stone to sharpen a serrated knife edge. 

Lay the diamond shaft in the serration and file up and down in each serration along the entire blade.  When sharpening of a serrated blade is sufficient, a burr can be felt on the flat, or reverse side of the knife blade (you can feel the burr with your fingernail.)  This burr should be removed by rubbing that side of the knife with the Diamond Knife Sharpener with a circular motion.  If no burr appears, then the angle was too small and the work on the grooves must be repeated using a larger angle.

Rust

The high-grade stainless steel that is used in Gerber products is 100% pure. Stainless steel isn't rustproof, but it is corrosion resistant to rust. Rust can develop if proper maintenance isn't carried out. 

Your Gerber product should be cleaned, dried, and re-oiled on a regular basis to prevent rust and corrosion; this is especially important in a wet or marine setting. If your blade comes into contact with anything you aren't sure about, it's always a good idea to wash it off with tap water, dry it, then apply a light coat of oil.  

Fishing Gear

If your Gerber product is exposed to saltwater, it must be washed with tap water after each usage and lubricated with a good quality lightweight oil on a regular basis. Salt water is highly corrosive, eating away at and damaging any sort of steel.

Multi-Tools

Use a high-quality light oil on Multi-Tool components from time to time. Before applying the product, make sure there is no debris or moisture in it. To help remove most of the dirt and grime from your Multi-Plier, wash it in clear water and dry with a soft cloth immediately.

Use a tiny soft brush to help loosen the trapped particles if dirt or grime is discovered in the groves, grips, and so on. After the tool has been fully cleaned and dried, apply the oil. Staining may be removed using a polishing cloth or a non-metallic scouring pad for heavily discoloured regions.