Marcus Chen

Marcus Chen

Technical editor specialising in steel metallurgy, blade geometry, and manufacturing processes. Marcus brings a materials science background to ScissorPedia’s reference library, translating complex alloy compositions and hardness ratings into practical guidance for working stylists. His deep-dive articles on cost of ownership, sharpening science, and hit-point mechanics are among the site’s most-read pieces.

17 Posts

togishi sharpening japanese-scissors hamaguri maintenance whetstones
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The Togishi: Master Sharpeners Who Keep Japanese Scissors Alive

By Marcus Chen
kikui japanese-scissors manufacturer-profile cobalt-alloy innovation wakayama
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Kikui Scissors: The 1973 Invention That Proved Cobalt Could Replace Stainless

By Marcus Chen
hikari japanese-scissors manufacturer-profile convex-edge hamaguri premium-scissors
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Hikari Scissors: The Convex Edge Patent Holders Who Limit Production to 1,000 Per Month

By Marcus Chen
hayashi japanese-scissors manufacturer-profile powder-metallurgy hrc-67 steel-types
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Hayashi Scissors: The Wakayama Workshop That Broke the Hardness Ceiling

By Marcus Chen
steel-types japanese-manufacturing vg-10 sg2 takefu hitachi supply-chain
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From Ore to Edge: Following Japanese Scissor Steel from Mill to Salon

By Marcus Chen
cryogenic heat-treatment sub-zero japanese-scissors steel-types extramarise
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Degrees Below Zero: The Cryogenic Revolution in Japanese Scissors

By Marcus Chen
lifespan durability steel-types maintenance scissors-care replacement
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How Long Do Professional Scissors Last? Lifespan by Steel Type and Usage

By Marcus Chen
hit-point shear-anatomy cutting-performance maintenance
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Hit Points Explained: The Small Part That Changes Everything

By Marcus Chen
new-shears break-in-period narashi-giri shear-care
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The Break-In Period: Why New Shears Need 10 Clients Before Peak Performance

By Marcus Chen
roi cost-analysis buying-guide professional-scissors value
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Are Expensive Scissors Worth It? We Did the Math on 5-Year Cost of Ownership

By Marcus Chen
sharpening japanese-shears hamaguri-grind maintenance
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Why Your Sharpener Might Be Destroying Your Japanese Shears

By Marcus Chen
seki-city japanese-manufacturing bladesmithing shear-production
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Seki City: Inside the World Capital of Professional Shears

By Marcus Chen
nickel-allergy shear-materials occupational-health cobalt-allergy
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Nickel Allergy and Hair Shears: What 11 Percent of Stylists Need to Know

By Marcus Chen
blade-geometry japanese-shears cutting-technique blade-lines
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What Japanese Stylists Know About Blade Lines That Western Shears Miss

By Marcus Chen
sharpening maintenance scissors-care professional-tips
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How Often Should You Really Sharpen Your Scissors? The Truth from 1,000 Stylists

By Marcus Chen
scissor-size buying-guide techniques professional-tips
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5.5 vs 6 vs 6.5 Inch Scissors: We Asked 500 Stylists Which Size Actually Works

By Marcus Chen
left-handed southpaw scissors-guide ergonomics
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Left-Handed Scissors: Why 60% of Southpaw Stylists Are Cutting Wrong

By Marcus Chen