Drill bits come in four sizing systems: fractional inch, metric, wire gauge (number), and letter. Most homeowners only ever use fractional inch bits — sizes like 1/8″, 1/4″, 3/8″ — but knowing how the other systems work helps you read charts, match pilot holes to fasteners, and buy the right bit the first time. This …
Milwaukee, DeWalt, and Makita are the three most popular cordless drill brands in the US market, and all three make excellent tools. The honest answer is: the right brand is the one whose battery platform you’re already in — or the one with the best drill for your specific job at your price point. This …
A brushless impact driver uses electronic sensors and a circuit board to control the motor instead of carbon brushes that physically contact a spinning commutator. The result is a tool that runs cooler, lasts longer between charges, produces more torque for its size, and has no wearing parts that need periodic replacement. For anyone who …
A lithium-ion battery pack for a cordless drill typically costs $40–$100 to replace and lasts 3–5 years under normal use. The difference between a battery that dies after 18 months and one that’s still going strong at 5 years comes down to how you charge it, store it, and use it. None of the tips …
Most drill failures have simple causes: dead or disconnected battery, tripped thermal cutoff, stuck reverse switch, or a faulty trigger. Before assuming the worst, work through this guide systematically — the majority of “dead” drills can be fixed in under 10 minutes without any special tools or parts. This guide covers cordless drills, but many …
When a cordless drill battery won’t charge, the problem is one of four things: the battery is over-discharged, the charger is faulty, the battery terminals are dirty or corroded, or the battery’s cells have failed. Most of these can be diagnosed in 10 minutes without tools. This guide walks you through each cause systematically so …
The numbered collar on your drill is a torque clutch, and the two-speed gear selector is your RPM control. Together, they determine how hard the drill drives before stopping and how fast it spins. Getting these settings right is the difference between a perfectly seated screw and a stripped head or split board. Most people …
Crooked holes are one of the most common frustrations for DIYers — and almost always preventable. Whether you’re drilling into wood, drywall, or metal, getting a perfectly straight hole comes down to preparation, technique, and knowing the right tools to use. This guide walks you through 7 reliable methods, from free hand tricks to simple …
A worn, slipping, or stuck drill chuck is one of the most fixable problems on any cordless or corded drill. Whether your chuck won’t tighten on a bit, is stuck open, stuck closed, or wobbles when spinning, this guide covers how to replace it entirely and how to fix a stuck chuck without buying a …
A cordless drill that’s properly maintained easily lasts 5–10 years of regular use. One that’s neglected — batteries stored dead, chuck never cleaned, vents clogged with dust — fails in 18 months. These 12 maintenance tips take less than 30 minutes a month and will double the working life of your drill, battery packs included. …