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Razors

The fine art of wet shaving

The first straight razor blades were wedgeshaped, rather like kitchen knives. This is called a flat grind. Over time, the idea of a blade with a hollow grind developed. This hollow grind makes the blade easier to hone and allows an extremely fine cutting edge. The thinner the cutting edge, the better the shave, because the blade edge can adjust better to the skin contours, which is why 1/2 hollow and other types of hollow grind developed. Another revolution was the full hollow.

This type is the most elaborate and therefore the most expensive.

Blade profile - Types of hollow grind

Pic A: Flat (flat-ground razor) Pic A: Flat
(flat-ground razor)
Pic B: 1/2 hollow Pic B: 1/2 hollow
Pic C: Full hollow Pic C: Full hollow


As you can see in the picture above, the blades actually have two hollows, between which a thin "ridge" is formed along the middle of the blade. In the picture, this ridge is shown disproportionately, but it can also be detected on the razor itself by a different reflection of the blade. The ridge increases stability and allows an even finer cutting edge.

When ground to perfection, a razor like this can "sing". You can detect a full hollow with the "nail test": When pressed on the thumbnail, the cutting edge will yield already to light pressure and then spring back fully. This means that the blade is highly elastic at the front and can thus easily follow the surface structure.

Structure of the straight razor

Structure of the straight razor

Stabiliser

Another distinguishing feature of a full or half hollow is the stabiliser where the blade meets the tang.

A full hollow usually has a double stabiliser, which marks the transition from the blade to the tang in steps. The stabiliser protects the blade from torsional bending in the transverse direction.

A half hollow only has one stabiliser. Resistance to torsional bending is less important for half hollows because nowadays they tend to be used for narrow blades.

Blade widths

Blade widths are traditionally specified in inches. A 3/8 razor is a smallish razor, which is used, for example, by barbers to shave the neck or for parts of the body that are not too round.

Most razors are offered as 4/8, 5/8 and 6/8 inch, which are the best sizes for shaving. 7/8 and 8/8 inch require special experience, therefore beginners should start with 4/8- or 5/8-inch razors. In principle, the size should suit the size of the hand and the face. The 5/8- or 6/8-inch widths are the most common sizes for beard shaving and are ideal for the chin and cheeks.

Sharpening and polishing

The choice is yours:

Opinions often differ when it comes to sharpening - a good solution for one person may be far from perfect for another. We would like to give a general recommendation from our experience:

  • For a blade needing restoration:

    A blade that needs restoring should always be honed on a honing stone first. For this purpose we recommend our Shapton stones. The ceramic bond makes the stones harder than water stones and, because of the readily available grits of up to 16000, they are ideal for the fine grinding of razors. For many, this will be sharp enough, but others will want to polish the blade further with finishing pastes. Following use of an appropriate hone (or hones) to restore the correct edge geometry, we recommend successive use of bio-diamond compounds in the following grades: 6 micron, 3 micron, 1 micron and 0.25 micron. These steps are then followed by stropping on a surface with chromoxide finishing paste and then stropping of the razor on unpasted leather.

  • For an out-of-the-box razor that may not yet be completely shave-ready:

    For beginners, the Thiers Issard aluminiumoxide-based sharpening paste is sufficient to make a blade fit for shaving. After the paste, strop the blade without paste. For professionals, we recommend using the following in this order: Bio-diamond sharpening pastes 6 micron, 3 micron, 1 micron, 0.25 micron, chromoxide paste and finally, an unpasted strop. In addition, for regular razor care once every 2 or 3 weeks, the following sequence: Bio-diamond paste 1 micron, bio-diamond paste 0.25 micron, chromoxide paste and finally, an unpasted strop.

  • For a razor already in regular use:

    Before shaving, we recommend using either a strop coated with Thiers-Issard finishing paste, followed by an unpasted strop or, if you wish, an unpasted strop by itself.

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