EDC Knife 101: Blade Steel, Lock Types & How to Choose
A good pocket knife is the tool you'll reach for every single day. Opening boxes, cutting cord, prepping a meal, handling the small jobs life throws at you. But the specs — steel types, lock names, opening mechanisms — can read like alphabet soup. Here is the plain-English guide to choosing your first everyday carry (EDC) folder.
Blade steel — the heart of the knife
Steel is a balance of three things: how long it holds an edge (edge retention), how easy it is to sharpen, and how well it resists rust (corrosion resistance). No steel is best at all three — it's about the trade-off that fits you.
Budget / easy-care steels (e.g. 8Cr, D2)
Affordable, tough, and easy to sharpen. D2 holds an edge longer than basic stainless and is a popular "semi-stainless" workhorse. Great for a first knife or a beater you won't baby.
Mid-tier all-rounders (e.g. 154CM, 14C28N, VG-10)
A sweet spot for most people: good edge retention, easy enough to maintain, and solid rust resistance. If you want one knife that does everything well without fuss, look here.
Premium steels (e.g. S35VN, M390, 20CV)
Excellent edge retention and corrosion resistance for shooters who want top performance and don't mind spending more time (or a guided sharpener) to re-edge them.
Lock types — what keeps the blade open
Liner & frame lock
A spring bar (the liner, or the frame itself) snaps behind the blade to lock it open, and you push it aside to close. Simple, strong, and one-hand friendly — the most common locks on modern folders.
Lockback
A spine-mounted bar locks into a notch in the blade; press the back to release. Very secure and ambidextrous, with a satisfying click. A classic for good reason.
Button / crossbar lock
Modern, smooth, and fully ambidextrous — a spring-loaded bar or button locks the blade and releases with a press. Easy to open and close one-handed without putting fingers in the blade path.
Opening & blade shape
Most EDC folders open one-handed with a thumb stud, flipper tab, or a front/wave-style opener that deploys as you draw it from the pocket. For blade shape, a drop point is the versatile all-rounder; a tanto is strong at the tip for tougher tasks; a sheepsfoot has little or no point for safer utility cutting.
Carry comfort matters. A deep-carry pocket clip, a blade around 3 inches, and a slim handle make a knife you'll actually carry. The best knife is the one in your pocket.
Quick pick
- First knife / hard use: D2 or 8Cr steel, liner or frame lock, drop point.
- Do-it-all daily: mid-tier steel, button lock, ~3-inch drop point.
- Performance enthusiast: premium steel, smooth flipper or crossbar lock.
Find your everyday carry blade
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Frequently asked questions
What blade length should I get?
Around 2.5 to 3.5 inches covers nearly all everyday tasks and stays pocket-friendly. Check your local blade-length laws before buying.
How do I keep it sharp?
Strop it regularly and touch up the edge with a guided sharpener or whetstone before it gets truly dull. A few minutes of upkeep beats a long re-profiling session later.
Are folding knives legal to carry?
Knife laws vary widely by state and city, covering blade length and opening type. Always confirm your local and state law before carrying.
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