Sharpening chisels - a complex science to a simple tool

How to choose a quality chisel?

wood processing is performed with different tools, but their main element is the cutting blade, is created when the chips or sawdust.Among the many variants of such tools, a considerable amount of work can not be performed without the use of chisels.Basically, gouges are steel flat rods of varying lengths, the cutting blades and liners, impaled on a wooden handle.

To strengthen the attachment space on the handle has a special crimp metal ring.Choosing these tools to work, you need to check the quality carefully.First of all, take into account corresponding to the desired size and shape.Checking surface finish, hardness and correctly sharpened cutting edges of the blades.The important point is a convenient form of handles and high quality ferrules to them.

To apply the requirements of safe operation of the absence of these rings of sharp edges and burrs, which can represent a real opportunity to risk of injury when using chisels.Such a possibility is the more will be higher if the wrong angle sharpening chisels will be admitted or working edge will generally blunt.

What is sharpening a chisel?

knives, pieces of iron planers should always be well sharpened.In operation, they should be easy to cut or shave his hair from the skin.As with other cutting tools, there are certain rules as to sharpen a chisel.Sharpening is very blunt and even damaged (chipped blade, etc.) edges begins to work on the emery wheel.

Then use an electric or manual transmission, and it is important to sustain the angle of sharpening and edge plane, preventing it fillets and distortions.Not the least role in this is the state of the abrasive wheel, the plane of its surface.

Also, using an electric machine for sharpening chisels, it is necessary to monitor the state of the surface, the temperature of its heat, preventing overheating and, as a consequence, loss of firmness and the blade working qualities.After such a "rough" preparation chisel comes the turn of the manual grinding and finishing.

Such work is usually performed using a special industrial abrasive whetstone and touchstone.The bars are made from a variety of fine-grained sandstone, silicon carbide and other abrasives.

For precise finishing grindstone is sometimes enough, then apply a fine-grained components (variations of fine slate, shale, etc.), but usually after work on the touchstone apply finishing techniques on the skin coated with a layer of special polishing paste GOI type.

Basic instructions for sharpening chisels

Before starting work, the bar should dampen engine oil, water or a saturated aqueous solution of ordinary soap.Such wetting should be repeated periodically, using a special brush.During processing on the bar is applied across the chisel chamfer plane pointed to the bar, and is pressed with both hands up and down is found.

Because of the accuracy of performance depends on the angle of sharpening work tool, often used all kinds of holders with precision to ensure its desired value.Such a device for sharpening chisels can be purchased in shops or made yourself.In its design there are screw terminals, guides and movement mechanism for the abrasive surface.

sharpened bevel forming burrs, bends in the opposite direction.Chisel lay on the other side, and the whole plane of the rear side is pressed against the abrasive. repeats the processing techniques, with alternating sides until turning burr removal.Lapping on the touchstone finally removes burrs.

Then it is possible, using the taut skin with polishing paste applied, finally edit the edge of a chisel blade.To control its quality, you can use well-known method with a magnifying glass and a mirror.If being sharpened semicircular chisels, tools and operating principles remain almost the same.It is necessary to strictly follow the angle of the bevel, and try to maintain it.

to changes of curvature on the touchstone, you can use the corresponding form an abrasive or a wooden block, tightly wrapped in sandpaper.From pioneer times known way to finishing blunt blade razor.The blade in the middle of the finger is pressed against the inner surface of glass and a conventional rotational movements in one direction is found, then the second side is also processed.