A “lockback” works like a fixed-blade with the added benefit of folding into the handle for safety and convenience. The lockback gets its name from the rocking lock plate visible on the back of the handle. Opening the blade causes the rocker to lock against the blade, locking it open. To release the “lock,” simply push down on the rocker at the back of the handle. Closing usually requires two hands, though there are one-hand openers, which are ideal for activities like climbing where only one hand is free.
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Having the desired lube to use is one thing, knowing where to apply it on the knife is another. It is best to use a spray lube, such as Dri-Lube, for locking liner knives. Using the included spray straw, aim directly at the pivot area to apply. Cycle (repeated opening and closing) the blade to work the lube in. If needed, spray a little more. For lockbacks and slip joints, the technique is a bit different. The area to aim for is the tang of the blade, where the backspring has constant contact with the tang during opening and closing. For best results, open the blade (or blades) perpendicular to the handle and apply the lube directly to the tang. Cycle the blade a few times to work the lube in. For consistent smooth operation, repeated applications at regular intervals will help your folding knife function properly
– Rust: Rust has a reddish-brown color. Rust will eat pits into your blade and contaminate what you cut. Light rust can be cleaned with oil. Heavier rust needs to be cleaned with more abrasive action, such as cleaner, polish, or plastic cleaning pad.
– Cleaning, polishing and lubricating help the performance, safety and longevity of your knife. Buck offers an assortment of knife care products.
– Store your knife in a dry place (out of the sheath). Lightly wipe the blade with clean oil 2-3 times a year to keep rust from starting
After using your knife, it is a good practice to clean and dry your knife Even for blades that are made with corrosion-resistant stainless steel, prolonged exposure to the elements can cause the steel’s surface to oxidize. Folding knives should be kept clean of debris, particularly the locking device on lock-blade knives.
As an alternative, chemical solvents such as Acetone, nail polish remover, MEK, alcohol or paint thinner may be used to clean your blade. Use care with these solvents, as some, such as acetone, nail polish remover, white gas, or brake fluid may damage some knife handles. Avoid harsh detergents that contain Chlorine (mostly powders, including some for washing dishes and clothes), which can accelerate corrosion of the blade steel.