Modern folding knives have long stepped beyond pragmatic utilitarian domestic cutting tool. Paying considerable sum for an elegant thing, the buyer expects a long preservation of its identity, and working properties. Alas, after a couple of months appears blurred the once perfect polish, deteriorating smoothness of the joint and get out into the light spoiling the appearance of other stuff. Answers to questions about who is to blame and what to do in this case is simple — responsible for the completeness and timeliness of care rests entirely with a knife at his owner.
GREASE are different
When to start to look for a new knife? Paradoxically — right after buying it. When sending your product to the retail network, the manufacturer is less likely wants to get it back because of damage during transportation or storage. What is taking steps in advance — makes conservation knife.
For conservation lubricant (usually a petroleum jelly and a variety of protective compounds), the most important feature is their ability to protect them, which is under the surface of the negative factors. These properties are defined by their ability to hold onto the protected surface by mechanical action, wash off with water and life.
So even if you bought a knife to the collection without sight on its practical use, then sooner or later still have to replace the old, partially polymerized, the new conservation grease.
If conservation grease left in the hinge is actively used a knife or mul-title, its owner will soon expect unpleasant things. Trouble usually starts with a fairly tight folding and end with the fact that all the dirt (including Natures abrasive SiO2, to put it simply — sand) accumulated in a pocket or bag, eventually turns out to be adhering to the tight spaces model, further weakening the smooth operation of the hinge scratching the heel of the blade and die. Trying to drop in a joint household watery oil from Grandma oiler to lubricate the sewing machine is fraught with even greater problems: Get a «mixture» of cures and hardens quickly, and the opening of the blade can now be had torn nail or cut.
Delete conservation grease when cleaning is not so easy, as they are specifically designed to counter the mechanical removal and washout. The most common means of struggle as the conservation workers with grease and dirt are the usual solvents, or solvents. Previously should make sure they are safe to handle materials in unobtrusive place. Special article — antiques. Then the first thing is to see a specialist, as the main rule with items of historical value, similar to the commandments of the doctors — «Do no harm!»
To clean modern products well proven popular part of WD-40. Very bad solvents, used oil and dirt motorcycle and velotsepey. Also in the network of shops for car enthusiasts widely available care products for car interiors — rubber, plastic, non-ferrous metals. After carefully test the use of such funds in a very inconspicuous place they help quality and quick cleaning sticks from mikarty, PCB-ing and a variety of plastics, particularly the knurled surface. To clean the non-ferrous metal old-fashioned approach «Asidol» a modern emulsion cleaning utensils made of stainless stali.A here to abuse the popular pasta GOI is not: it is a means of green so well hammered into tiny cracks and crevices that pull it out later is extremely difficult.
For the convenience of the knife to get rid of dirt, along with the «chemistry», and it is advisable to use mechanical means: cloth and paper towels, brushes, cotton swabs, sticks and toothpicks. Supplies do not need to save — the dirt to be removed completely at least from elementary considerations of hygiene. The final stage of cleaning
— Final degreasing cleaned surfaces, carried out with the help of methyl alcohol, «white spirit» or sprays for cleaning computer monitors. Try to spend it with gloves to avoid nasazhat greasy fingerprints. After degreasing can be carried out either bookmark the production of fresh grease (eg hinge), or move to the preservation of the product, carrying and use of which in the foreseeable future is not planned.
How to lubricate the blade itself, the question is very personal. Low carbon stainless steel grade 420 or 425 on your knife, you can do nothing to lubricate: early enough to wash the dirt with water and wipe. Carbon blades «Yanagi ba» the Japanese camellia oil lubricated. Pragmatic compatriots prefer to carbon-ki castor oil. Vegetable oils are safe for health, but very short-lived, so the blades are suitable for those that are often at work. If the blade will not be used for cooking, it is appropriate to use various household chemicals. In particular, non-abrasive polish for cleaning chrome-plated parts of cars and motorcycles not only helps protect the blade of a machete or a blade of an ax from moisture during prolonged field output, but can be recommended as a preservative means of long-term storage, works better than traditionally used for preserving waxes and ceresin. In general, frequently used everyday knife blades is sufficient to keep in clean and dry.
But terrible happened. Do not you watch your favorite, but of «freckles» Pitino corrosion-traction it did not save. No need to despair. The first thing coolly assess the «size reduction» by conventional toothpicks. After cleaning it of the deepest caverns, you can make a preliminary conclusion about the extent necessary dosed on the blade. Quite often on the blades from corrosion-resistant steels such spots are only superficial. They are easy to remove bureaucratic eraser or a used toothbrush circumcised 2 / s bristles sukonkoy and some slightly tapered avtopoliroli.
If corrosion has formed a slight damage to the surface, and this trouble can be eliminated avtopolirolyu. Just have to take an abrasive polish to remove the scratches.
After removal of corrosion we bring to the surface condition sukonkoy with slightly tapered polish. If the traces left deep (as well as if the surface of the blade satin or matte), will have to make a difficult choice: to come to terms with the remaining surface cavities or say goodbye to the factory processing poverhnosti.V the latter case, take the same favorite auto shop special abrasive sponges (ScotchBrite, products ZM company) and get rid of traces of corrosion. In severe cases, you can use fine sandpaper. Results of abrasive tools it is necessary to zapolirovat as all the remaining risks and minor scratches constitute potential sources of corrosion.
This delicate HINGE
The smooth operation of the hinge folding knife can tell a lot about its owner. There is not even need to remember fine-tune the automatic mechanisms of expensive imported knives: they are independent service sometimes requires skill watchmaker. Manufacturers of such products is not recommended to climb into the machine straschaya curious cancellation «Lifetime Warranty» in the case of attempts to disassemble the knife.
However, the joint care usual jackknife — employment inevitable. Without it, at a certain stage of the folding knife becomes structurally similar to clumsy.
On the issue of care for not folding hinge manufacturer of special wiggle owners leaves. For example, the Swiss manufacturers recommend washing hinge powerful jet of water, followed by drying assembly hairdryer. For the most severe cases, all of the same suit led and Moto degrizery-you-Solvay, which, in combination with a powerful jet of air from the compressor is able to purify even the very running joint. After drying and degreasing joints in such a small amount of grease, spoke out the excess to be removed. To determine the presence of excess grease will help a few test cycles opening-folding. Another amateur oiler so generous that the knife is not only spoil bag and pocket, but also hinge firmly grab fresh frost. And it is very well established biker lubricants for chains, which in addition provide a good combination of toughness, wear resistance and corrosion protection.
The friction in the hinge folding knife has a dual nature. In a moment of peace in the areas of contact between two planes are formed so-called «adhesion bridges» — the place where the friction surfaces «grappled» forces of molecular attraction. At the time of uncovering or folding knife, these «bridges» are torn, and pivotable about a common axis of the plane starts to deform each other with their topographical. A considerable roughness of the mating surfaces provides significant microstrain, as a result of which the blade is opened tighter. If the surface of the ground in each other perfectly, the friction created by a large number of «adhesion bridges» that impede unfolding blade. Therefore hinge operating without lubricant, the optimum values for the friction and wear considered roughness in the range 0,20-1,40 m. Some users go to conscientious objection to bookmark lubrication, friction is good considering the small run-hinge completely acceptable price to pay for the lack of fuss with grease.
The essence of the struggle with friction in a folding hinge is to isolate the rubbing surfaces by the interposition of anti-friction washers or lubricating film. The obvious disadvantage of conventional lubricants is its inevitable destruction after which (under the action of friction, abrasive particles and water) begins to pivot to jam. Therefore, the grease should be regularly updated. When using a long-lasting anti-friction washers friction is reduced through the use of special materials — metal (brass and bronze), or self-lubricating-ing plastics (compositions containing polymers such as Teflon-4 with fillers — graphite, molybdenum disulfide, etc.) — Have a low coefficient friction and high wear resistance. The main drawback is the inability to protect the goals of the Joint omnipresent corrosion.
The new direction of reducing friction — Special metalplacking lubricant combines the advantages of lubricants and anti-friction washers. They contain surfactants, film-forming metal antifriction or friction heating protected surfaces. For example, a popular means Militec-1 based on hydrocarbons decomposed in the contact area with the friction and temperature to form on the surface to be protected «no-wear» of the film, and is able to provide a good surface protection against corrosion. Unfortunately, the hinge blade is the system friction, which is open to the air, dust and water, so even a protective film by using the most advanced care products, require regular «refreshment», though not so often compared to conventional greases.
Instead of conclusion
In the end, how to care for a knife and what it means to use — a private affair of its owner. After all, the appearance of the knife, and the reliability of its mechanism are determined primarily by less exotic means of care and cost, as completeness and timeliness of care. Proper use of modern means of cleaning and savings will not only reduce the time to care for a knife, but it will help as long as possible to keep it original appearance and performance. Is it not worthy of this high-quality tool for personal use?