Trivisa Firefly-BM JM16-BM-14 14C28N Blade Micarta Handle Crossbar Lock Folding Knife

Designed by the TRIVISA team, the Firefly-BM JM16-BM-14 pairs a compact profile with practical materials for everyday carry and outdoor use. Its 2.99-inch 14C28N stainless steel blade features a stonewashed finish and swedge profile, offering corrosion resistance and straightforward sharpening for convenient maintenance. A Micarta handle provides a distinctive, comfortable grip, while the crossbar lock supports secure operation. Ceramic ball bearings help the blade open smoothly. Measuring 6.75 inches overall and 3.76 inches when closed, this folding knife weighs just 2.39 ounces for easy carry. The blade is 2.7 mm thick and rated at 60±2 HRC. Suitable for EDC, hiking, camping, fishing, and hunting, it’s a versatile companion for daily tasks and outdoor adventures.

14C28N Blade Introduction

14C28N is a high-value budget-to-midrange stainless steel that excels in corrosion resistance and ease of sharpening, making it a low-maintenance workhorse for EDC and wet environments, but it falls short of premium steels in edge retention and requires more frequent touch-ups when cutting highly abrasive materials like cardboard.

SPECIFICATIONS

Designer:TRIVISA Team
Style:Swedge
Blade Material: 14C28N Blade
Blade Finished: Stonewashed
Handle Material:Micarta Handle
Lock Style:Crossbar Lock
Hardness:60±2HRC
Bearing:Ceramic Ball Bearing

Size:
Overall length-6.75"(171.6mm)
Blade length-2.99"(76mm)
Closed length-3.76"(95.6mm)
Blade width-0.87''(22.2mm)
Blade thickness-0.11''(2.7mm)
Net Weight:2.39oz(67.8g)

Usage:Outdoor survival,EDC,hunting,fishing, hiking and camping

Trivisa Firefly-B - Stonewashed 14C28N Swedge Blade with a Black Micarta Handle

The Trivisa Firefly-B pairs a 2.99 inch 14C28N swedge blade in stonewashed with a black Micarta handle, a crossbar lock and ceramic bearings at 67.8 g (2.39 oz). More folding knives at EDCMALL.

14C28N on a Slim Swedge Profile: Low-Maintenance EDC

The Firefly is Trivisa's compact value folder: a 2.99 inch 14C28N blade ground with a swedge along the spine, stonewashed or rose-gold PVD finished, riding on textured Micarta scales. Sandvik 14C28N is the pragmatic pick at 60+/-2 HRC - corrosion-proof in wet weather, hard to chip, and back to shaving sharp in minutes on a pocket stone. The crossbar lock is fully ambidextrous, the ceramic bearing pivot stays glassy, and the whole knife weighs just 67.8 g (2.39 oz). Compare 14C28N with D2, Nitro-V and 154CM in the table below.

Why the Firefly-B Belongs in Your Pocket

• 2.99 inch 14C28N swedge blade at 60+/-2 HRC with a flat grind.
• Stonewashed blade finish - a matte tumble finish that hides carry scratches and kills glare.
• Black Micarta handle - black linen Micarta with a milled texture that grips harder when wet.
• Crossbar lock: ambidextrous, dirt-tolerant and finger-safe on closing.
• Ceramic ball bearing pivot for a glassy swing.
• Thumb stud opening for one-handed deployment.
• Steel pocket clip, tip-up.
• 67.8 g (2.39 oz) on a 6.75 inch frame - a compact, honest EDC folder.

Best Uses for the Firefly-B

• Daily pocket duty: mail, packaging and food runs on a blade that shrugs off rain.
• Copper lovers' rotation carry - the handle patinas into a one-of-one finish.
• Wet-weather hiking where 14C28N and Micarta both shrug off moisture.
• Office carry with a look that reads higher than its price.
• First folder for a new enthusiast - easy steel to maintain, safe lock to learn.

Frequently Asked Questions

What is the blade steel?
Sandvik 14C28N nitrogen stainless, hardened to 60+/-2 HRC. It is corrosion-proof, resists chipping and sharpens in minutes; expect more frequent touch-ups than a super steel under abrasive cutting.

What is the handle material?
Black Micarta - black linen Micarta with a milled texture that grips harder when wet.

How does it open and lock?
The thumb stud swings the blade out one-handed on ceramic ball bearings; the crossbar lock wedges behind the tang from above and releases with a pull of the bar - fully ambidextrous.

What does the swedge do?
The bevel along the spine lightens the blade, sharpens the tip geometry and gives the Firefly its distinctive silhouette.

How big is it?
6.75" (171.6 mm) open, 3.76" (95.6 mm) closed, 2.99" (76 mm) blade at 0.11" (2.7 mm), and 67.8 g (2.39 oz).

Sandvik 14C28N vs. Common Pocket Knife Steels

Steel	Typical HRC	Edge Retention	Corrosion Resistance	Toughness	Sharpening Ease
14C28N (this knife)	59-61	Good	Excellent	Good	Very Easy
Nitro-V	59-61	Good	Very Good	Better	Easy
154CM	58-61	Good	Good	Very Good	Moderate
CPM-S35VN	58-60	Very Good	Very Good	Better	Moderate
D2 Tool Steel	58-61	Very Good	Fair	Good	Moderate
8Cr13MoV	57-59	Fair	Good	Good	Very Easy

Sandvik 14C28N is a nitrogen-refined martensitic stainless that lands at 58-61 HRC in production heat treats. On a value folder it is the smart pick: corrosion resistance that survives wet weather and pocket sweat, a fine stable edge that refuses to chip, and sharpening so easy a few passes on a pocket stone restore the apex. The trade is raw wear resistance - expect more frequent touch-ups than a high-vanadium super steel under abrasive cardboard work. HRC figures are typical mill ranges, not a guarantee for any single blade.

Glossary of Key Terms

Trivisa
A Chinese knife brand building value folders around practical steels, with a clean in-house design language.

Firefly
Trivisa's compact swedge-blade folder: 2.99 inch 14C28N blade, crossbar lock, ceramic bearings, 6.75 inches overall and 2.39 to 4.85 ounces depending on the handle material.

Sandvik 14C28N
A nitrogen-alloyed martensitic stainless at 58-61 HRC. Corrosion-proof, fine-grained, hard to chip and famously easy to sharpen.

Crossbar Lock
A spring-loaded bar spanning the handle that wedges behind the blade tang. Fully ambidextrous, keeps fingers out of the closing path, and among the strongest folder locks built.

Ceramic Ball Bearings
Hardened ceramic balls around the pivot. The action stays glassy for years, and ceramic will not rust or flat-spot.

Swedge
A bevel ground along the blade spine. It lightens the profile, sharpens the tip's geometry and adds a distinctive silhouette.

Micarta
Layers of linen or canvas compressed and cured in resin. It gets grippier when wet and wears into a personal patina over years of use.

Copper Handle
Solid copper scales with living-finish patina that darkens with handling; naturally antimicrobial and satisfyingly dense in the pocket.

Stonewash Finish
A tumbling process that beads the steel into a uniform matte grey, hiding carry scratches and killing glare far better than satin.

PVD Coating
Physical vapour deposition: a hard, thin metallic-ceramic layer bonded to the steel. Rose-gold and black finishes resist scratches; edge wear is cosmetic, not structural.

Black Stonewash Finish
A dark stonewashed treatment that reads black in low light and grey at the wear points. Hides scratches better than any satin.

60+/-2 HRC
The Rockwell C hardness band the blade is heat treated to: hard enough for long edge life, still honest to sharpen at home with patience.

Who Should Buy the Firefly-B

• Buyers who want a genuine crossbar-lock folder under $90.
• Copper fans who want a living-finish handle with a working blade.
• Users with smaller hands who like a compact 6.75 inch frame.
• Wet-climate carriers who want maintenance-light stainless.
• Anyone building a colour-rotation EDC set on a budget.

Who Should Skip It

• Super-steel chasers - 14C28N trades edge life for easy care.
• Users who want heavy pry capability; the 2.7-2.8 mm blade is a slicer.
• People who dislike weight - the copper version carries at 4.85 ounces.
• Buyers who want flipper deployment; this opens on a thumb stud.

Care & Maintenance

• Wipe the blade dry after every use; 14C28N is genuinely stainless, but pocket lint holds moisture against the steel.
• One drop of light knife oil at the pivot every month or two, then cycle the blade so oil spreads across the bearing.
• Blow lint and grit out of the handle channel and lock track before oiling - that is where dust collects.
• Sharpen on a 1000-grit water stone or a ceramic rod; 14C28N grinds fast and takes a keen working edge in minutes.
• PVD and black stonewash finishes wear bright at the edge with use - exposed steel behaves the same, just lighter.
• Scrub G10 and Micarta scales with warm water, a drop of mild soap and a soft brush; wipe carbon fiber with a damp cloth only.
• On liner-lock models press the lock bar fully aside before closing; forcing the blade past a live liner rounds lock faces.
• Check the pocket clip, pivot and body screws every couple of months with the correct Torx driver.
• Never pry, twist or use the tip as a screwdriver - the 2.99 inch blade is a slicer, not a lever.