Scissor Sharpening

MAKE SURE YOU LIKE US ON FACEBOOK

JMR Australia invested in what we researched to be the best scissor sharpening machine on the market.

The US patented, “Rapid Edge” (RES) water cooled, flat head, honing machine.

We also invested that our Sharpener be trained at the Rapid Edge factory in Glen Falls USA by none other than the inventor of the RES system Mr Roger Kay.

Anything else was just not good enough!

Why use us for Sharpening?

  • Shears are not just sharpened – they’re fully reconditioned
  • Shears are quickly and professionally serviced.
  • Reconditioning delivers results far superior to standard sharpening services
  • Micro-fine polishing removes a minimal amount of metal, increasing the life of your shears
  • Water-cooling during sharpening protects shears from heat damage.
  • RapidEdge®-patented control arm ensures correct and consistent blade angle.

We give your shears a complete service.

  • We inspect, disassemble and clean.
  • The inside ride is hand honed to like new condition.
  • The shears are sharpened, diamond honed and leather stropped to a razor sharp edge.
  • Reassembly includes new washers and bumpers if needed at no extra charge.
  • We oil, set the tension and adjust the tip closure.
  • All scissors are tested on human hair after sharpening & assembly.
  • JMR will recondition any brand of shear or thinner/texturiser.

For a quotation please contact JMR Australia on:

Ph: 02 9457 9321 or email us at: rapidedge@jmraus.com.au

Care of your Scissors: 

It is important to take care of your scissors!

Your scissors are a delicate precision instrument which must be continually cleaned, oiled and adjusted to maintain peak performance.

Your scissors depending on their quality and use should be sharpened every 6-12 months.

Thinners, every 12 to 18 months.

Do not let anyone else use your scissors.

Do not drop your scissors or knock against a hard surface this can destroy your scissors.

Every day, after use, clean off excess hair and wipe over with a soft cloth or chamois.

Store in a dry place, preferably in a leather scissor case.

Do not leave your scissors on the bench or trolley.

Every day, before you use your scissors, check the adjustment of the scissors. Leaving them too loose or too tight can damage the edge of the scissors.

Depending on the frequency of use, oil your scissors on a regular basis, at least every two to three days.

When your scissors become dull, you should have them sharpened by a professional sharpener, using state of the art sharpening machines.

Poor sharpening can and will destroy your scissors!!!

Want to know more about Scissors?

If you would like to know more about scissors like the different types of edges and some of their recommended uses, you can read on below. You will also find information about the different types of metal used to make scissors and the different processes used to make scissors.

WHAT IS A SCISSOR and WHAT IS A SHEAR?

The word “scissor” apparently comes from the Latin word “cisoria,” meaning a cutting instrument, and the spelling is due to confusion with the Latin word “Scissor,” a form of the verb “scinder,” meaning to cut. The word appears in Old French between 842-1300 A.D. as “Cisoires,” from which the Modern French word “Ciseaux” derives. In late Middle English, about 1400 A.D., there is found reference to “sisours” and “cysowres.”

The word “shears” apparently has quite a different derivation, originating from the Germanic/Teutonic root “Sker,” which later changed to “Skeresa.” In Old English, the word became “Scear.” The word in German is today “Schere.”

Today’s modern dictionaries define a scissor as “A cutting implement consisting of two blades joined by a swivel pin that allows the cutting edges to be opened and closed” while a shear is defined as “A pair of scissors” and “Any of various implements or machines that cut with a scissor like action, often used in the plural”.

German or Japanese: What’s the Difference?

What is a Japanese Style scissor? Is it different than a German Style scissor? Is one better than the other for different uses? Is there a difference in caring for different scissors? These are a few of many questions constantly asked in the beauty industry today.

The Edge:

Japanese style scissors have very sharp edges that taper to a sharp point called a Convex Edge or Honed Scissor. These edges are very thin and sharp allowing the user to use all cutting techniques, including slide cuts, wisping, etc. Because the edges are so sharp, they would rub themselves dull on the hollow side of the edge. To keep this from happening, a hone line is ground in the hollow along the edge. The hone line is the thin flat line that you see on the hollow side of the edge that runs from the tip of the scissor to the back. This gives the scissor a smooth and quiet run. If we did not grind on the hone line, the scissor would run hard and loud.

(The run is the feel and function of opening and closing a scissor). If a scissor sharpener does not sharpen and re-hone your scissor correctly, the scissor will never feel like it did when it was new. But if sharpened correctly, the scissor often feels and cuts better than when it was new!

honed-edge

A German scissor has flatter edges than a convex scissor. We call this a sword or bevel edge. Bevel edges are not as angled as a convexed edge, thus requiring one or both edges to be serrated or corrugated. Serrations are fine lines or teeth ground into the edge of one blade. The serration holds the hair, keeping it from being pushed forward.

non-honed-edge

Now we come to the performance differences between the Japanese (convex edge) and German (bevel edge) scissors. Because of its very sharp edges, the convex scissor cuts through hair smoothly and efficiently, with less force. The convex scissor is constructed for slide cutting or wisping. It runs smoothly, quietly, and very lightly. However, it has the tendency to nick and dull faster than a bevel edge scissor. It also has a tendency to push the hair more than a serrated bevel edge scissor.

The bevel scissor is very durable. It holds the hair very well and does not push it forward. It is the scissor of choice for blunt and layer cutting, dry cutting and for the cutting of synthetic and coarse hair. Its major drawbacks are that one cannot slide cut with it, because of the serration, and it runs louder and rougher than a convex scissor.

So we rate the scissors as follows:
Bevel edge scissors: Slide cutting / wisping 5 Layer cuts / Scissor over comb 10
Convex edge scissors: Slide cutting / wisping 10 Layer cuts / Scissor over comb 9

The Most Important Aspects of a Scissor are:

  1. STEEL – What type of steel alloy the scissor is made from. What grade of steel is it? 300 series, 400 series, etc. This is the general metallurgical composition of the scissor.
  2. PROCESS – The processing of this steel. Is it forged, cast, or sintered metal. Was it heat treated correctly, ice tempered, etc.? Even the best steel can be next to useless in a scissor if it is processed badly.
  3. MANUFACTURE – The manufacture of the scissor. Is it convexed or beveled. Is it hollow ground? If so, is the rake angle correct, etc.?

What Does Ice Tempering Mean?

The word “ice” is so popular that a lot of regular carbon steel scissors and shears proclaim to be Ice Tempered, which does not make any sense technically. Some people even think “ICE” is a brand name. The important thing to remember is that ice tempering is only beneficial on stainless steel.

In a simplified form, stainless steel is regular steel with chromium added to make the steel more rust resistant, thus “stainless” steel. The disadvantage of the high content of chromium in stainless steel is that the cutting edges dull quicker. To overcome this, the steel is subjected to very low temperatures (frozen or “ice tempered”), to optimize the steel structure for hardness. This is how it works:

To make steel hard, it has to be heat treated. With stainless steel, that means heating the steel above 2000 degrees Fahrenheit. At that temperature the structure of the material is at its optimum. To preserve this structure, the steel is cooled rapidly (quenched) and tempered at about 450 degrees Fahrenheit. Now you have a pretty good hardness and flexibility on your tool except that the chromium in the steel will not permit a long lasting cutting edge. To make the cutting edge last longer, the steel is subjected to about 120 degrees below zero; in other words, “Ice Tempered”. The tool is not much harder, but the steel structure is at its optimum. It is virtually impossible to prove or disprove if ice tempering was done, without a steel analysis. The only proof is how many cuts one can get with a scissor or shear before it dulls.

Hot Drop Forged vs. Cast vs. Blanked

What is a Drop Forged shear?

Pieces of steel are heated up red hot and put in a die that looks somewhat like a cake form in the shape of the shear or tool. Half of the form is fastened to a big anvil; the other half of the die is attached to the ram which acts like a hammer. The ram comes down on the steel, forging the pliable steel into the die and giving the steel the form of the future shear. These drop hammers are up to 20 feet high, standing on a 10-foot deep foundation. The ram can weigh 1000 lbs. or more. Because of variances in dimensions of the shears, some of the hot steel is being squeezed out of the die cavity. This creates a large burr which is cut off under heavy presses. Now the still hot shear forgings are cooled off under controlled conditions to eliminate any internal stress. They are then tempered and trimmed.

What is a Cast shear?

Molten metal poured into a mold that is formed to the desired shape. The casting process leaves the molecules of the metal in such a configuration that the metal becomes very brittle and can be broken if dropped or if the sharpener tries to re-set the blade by bending. Cast scissors are harder and the edge will last longer than a forged scissor but the drawback is that they can break easily.

What is a Blanked shear?

Most less expensive shears are blanked out. Strips of steel are cut out in the form of a shear, like rolled cookie dough is shaped with cookie cutters. The cheaper version of the “Blanked” shears are then ground into shape. For a better quality the cut out “Blanks” are put into a powerful press and the blade is squeezed into shape. Thereby the steel near the edge is compressed and the cutting edges last longer. This means that not all cheaper shears are equally cheap. Drop forged tools and shears are far superior to blanked ones. The material flow of the hot metal being forged and pounded into the cavity gives the steel a much denser structure, better quality and ultimately longer life.

Cobalt Scissors

Cobalt scissors come in two types. Forged Steel and Powder or Sintered Metal. The powdered metals give the maximum cobalt benefit, but are VERY susceptible to breaking. The powder metal cobalt alloy demonstrates outstanding mechanical properties and cutting performance. Powder metal cobalt scissors are usually composed of a 50% Co (Cobalt) – 28.7% Fe (Iron) -20% W (Tungsten) – 1.3% C (Carbon) alloy. These alloys attain an un-tempered maximum value of 66 to 67 Rc. Forged Cobalt tools are much tougher than sintered metals, but seldom have more than 10% cobalt in them, making them softer with Rockwells around 58Rc.

NOTE:

Rc (or Rockwell) is a term used to define hardness, the higher the number the harder the metal. Rockwell is simply a scale used to measure hardness. Hair scissors should have a minimum of 56 Rc to be a decent quality scissor. Ideal would be around 60 to 64 Rc

Scissor Terminology

Below are a couple of graphic illustrations showing the terminology used for honed and non-honed scissors

honed-scissor

non-honed-scissor