|Craftsmanship & Quality
vs Metal Specifications!!!
Have the Answers to Your Questions.
|All Hikari scissors are comprised of a proprietary
blend of molybdenum,
and various other alloys.
Because we have been making scissors for over 50 years, we
have been able to experiment with many different percentages.
We have found the
percentages that give the best sharpness,
durability, strength, hardness, and ductility
(the degree in which a steel can flex or bend without fracturing, very
balancing a scissor). All of these factors affect the way a
scissor performs in both the
short and long term as well as the way it “feels” as
it cuts through the hair.
|The method of tempering the steel
and the Rockwell hardness
are also factors that affect the performance of the scissor.
However, without a doubt, the most important ingredient is the quality of craftsmanship
that is used to make the scissor. All Hikari scissors are hand made by
the highest skilled technicians at the Hikari factory in Japan.
||Question: Are Hikari
All HIkari scissors are forged.
Fact: Today, almost all high quality scissors are
is the process where metal is heated until molten. While in the molten
or liquid state it is poured into a mold or vessel to create a desired
is the application of thermal and mechanical energy to steel billets or
to cause the material to change shape while in a solid state.
||Question: If two
scissors are made out of the same metal and have the same Rockwell
Hardness, will they have the same metal performance?
No. Even more important than the type of metal that a scissor uses is
the how the metal was tempered.
|Tempering is a heat
technique applied to ferrous alloys, such as steel or cast iron, to
achieve greater toughness by decreasing the hardness of the alloy. The
reduction in hardness is usually accompanied by an increase in
ductility, thereby decreasing the brittleness of the metal.
As written on our website, Hikari uses vacuum heat tempered alloys,
this process makes the metal very strong and yet somewhat flexible (so
it can be set and balanced and the blades will "flex" across each
other). It also gives the feeling that it "cuts like a hot knife
through butter" that we have become famous for. The tempering
of a material is done in the country that the scissor is made. So if a
Korea or China scissor uses Japanese steel, it is Korea or China
tempering, not Japanese tempering which is a crucial part of the
performance of the steel. So for example, Japanese 440C steel
the same on all scissors, even though it’s technically the same
material. Each company has their own unique way of tempering the
scissor. That is why scissors from different countries with the same
specifications will feel and perform very different.
||Question: What is Rockwell Hardness?
The Rockwell scale is a hardness scale based on indentation hardness of
a material. The Rockwell test determines the hardness by measuring the
depth of penetration of an indenter under a large load compared to the
penetration made by a preload. Basically Rockwell hardness is
how hard a material is. So technically, the higher the
Rockwell hardness, the harder the metal is.
Important Fact: Harder is not always better!
If the material was a knife, a high Rockwell
hardness would result in a knife that is less likely to
get a chip or nick in it when cutting a hard material. However, if the Rockwell hardness is
too high, the material is brittle and can shatter or break. How high
you make the Rockwell
hardness will also be determined by the type of metal you
use. The lower quality metal you use, the lower the maximum Rockwell hardness
you can use without the material becoming too brittle.
when it comes to scissors, it's even more complicated. You have two
blades rubbing across each other. So if you have two very hard objects
rubbing across each other, hundreds of times a day, and both objects
are extremely hard, they dull each other very quickly. It's like a
diamond rubbing across a diamond. Both are very hard and strong but
they are now rubbing against each other. Also, if the blades are too
hard, they don't "flex" across each other which is very important when
you have convex blades with a concave or hollow grind inside. This
"flexing" of the blades across each other is what makes convex scissors
cut accurately and cut from the inside out.
||Question: What is the difference between convex vs. serrated?
Answer: Serrated - holds the hair like a comb
& when it cuts through the hair it can damage the cuticles.
Convex - cuts cleanly through the hair
with two smooth blades coming across each other.
Many scissor manufacturers are now making scissors with a convex edge.
But, it isn't just about putting a convex edge on the scissor. The
quality of the convex edge plays a big part in the way a scissor
performs and feels as it cuts through the hair.
The Hikari precision
convex edge combines a hand-buffed outer blade with a
hollow ground concave
inner blade. Both blades are polished by hand to razor sharpness. This
edge has no serrations or conventional outer edge bevel or grind.
Hikari's convex edge has a lower angle than other scissors. This lower
angle along with the consistency of the angle from tip to pivot make
Hikari scissors the most accurate in the world.
is so much that goes into how a scissor performs. However, the most
important ingredient is the craftsmanship. Everything must work
together. The convex edge, the concave inside, the pivot, the set or
balance, how the scissor is designed and yes, the materials and
hardness do play a role as well. But it's probably the least important
of all the aspects.
|Question: So if the
specs don't determine a good scissor,
how do you know what to buy?
same way you would buy any expensive item like a car. You would go by
past performance, reviews, reputation, test drive it, etc.
you buy a no name car based on specs? Wow, the specs of the car are
great, but the car runs horrible, I don't get it. It's no different
with scissors. Ask other experienced stylists what they use and their
opinions and go by reputation and try the scissor yourself.
world performance is what really matters. If the specs are really good,
but everybody hates the product, what does it matter? The
proof can be found in the long term performance of the product and the
reputation it has earned.
more than 50 years, Hikari has distinguished itself by consistently
extraordinary comfort, precision, performance, and longevity. In
response to numerous inquiries from loyal customers around the world,
we are honored to share this information with you.