Knife Blade Grinds Explained: How Edge Geometry Affects Performance
Juan Arango Juan Arango

Knife Blade Grinds Explained: How Edge Geometry Affects Performance

Steel determines how long an edge lasts. The grind determines how it performs. A flat grind and a hollow grind in the same steel will cut completely differently — and understanding why makes it easier to pick the right knife for what you actually do with it. This guide covers all seven grinds, when to use each, and how to match the grind to your steel.

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Hearing Protection Guide: Active vs Passive Explained
Juan Arango Juan Arango

Hearing Protection Guide: Active vs Passive Explained

Written from personal experience with tinnitus developed during years of unprotected shooting in the Colombian Army. This guide covers everything he wishes he'd known earlier — how hearing damage actually works, the real difference between passive and active protection, and honest recommendations for every budget and shooting scenario.

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Stop Using Your Phone Light: The Complete EDC Flashlight Guide
Christina Arango Christina Arango

Stop Using Your Phone Light: The Complete EDC Flashlight Guide

Your phone flashlight is weak, drains your battery, and leaves you without communication if you drop it. This guide covers everything that actually matters when choosing an EDC flashlight (lumens, beam patterns, IP ratings, battery types) plus honest recommendations across every price point from $30 to $340.

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Knife Blade Shapes Guide: Types, Uses & How to Choose
knives Juan Arango knives Juan Arango

Knife Blade Shapes Guide: Types, Uses & How to Choose

Why does blade shape matter? Because a tanto and a drop point will perform completely differently on the same task and choosing wrong means a knife that fights you instead of works for you. This guide covers 8 common blade shapes, their strengths and weaknesses, and which one fits your actual use case.

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