Guides
Short, practical guides to common drilling and screwing problems. No fluff — just what actually works.
Guides
How to keep wood from splitting when screwingWood splitting when you drive a screw? Here's how to stop it, starting with the one fix that does most of the work: a correctly sized pilot hole. Do deck screws need pilot holes?Most deck screws drive straight into softwood and pressure-treated framing without a pilot hole, but dense hardwood decking like ipe should always be pre-drilled. Here's how to tell. Do I need a pilot hole?Not always, but a pilot hole is cheap insurance. Here's when you can drive a screw straight in, when you should pre-drill, and when it's essential. How to countersink a screwCountersinking sinks a screw head flush with the surface for a clean look. Here's how to do it right, plus the honest difference between a countersink and a counterbore. Why your screw keeps strippingA screw strips in two different ways: the head rounds out, or the hole spins. Here's how to tell which is happening, how to fix each, and how to stop it next time. Pilot hole too big or too small? Here's what to doDrilled a pilot hole the wrong size? Too small and the screw splits the wood or snaps; too big and it won't grip. Here's the fix for each, and how to get the size right. Pilot vs clearance vs countersink: why drill the extra hole?Driving one wood screw can involve three different holes (a pilot, a clearance hole, and a countersink), each with a different job and a different board. Here's what each does and when you need it. How long should a wood screw be?Pick wood-screw length with one simple rule: pass through the top board and sink about two-thirds into the base board. Here's the formula, worked examples, and lengths for common joints. Screw sizes explained: how to measure & identify a screwWhat the gauge number on a wood screw means, and how to measure and identify your screw's size with calipers or a ruler — then get the pilot, countersink and clearance sizes that go with it. Drywall anchor types explainedThe four main drywall anchor types (plastic expansion, self-drilling, molly and toggle) with the weight each holds, how hard it is to install, and when to use each. Ratings vary by brand, so check the packaging. And if you can hit a stud, use it. A stud beats any anchor. Drywall screw size: which screw for your drywallWhat size drywall screw to use: 1¼" screws for ½" drywall, 1⅝" for ⅝" — sized so the screw reaches about ¾" into the framing. Coarse thread for wood studs, fine for metal, bugle head to sit flush. With a thickness → length chart. How to find a stud (with or without a stud finder)How to find a wall stud without a stud finder — the 16"/24" spacing rule, outlets, tapping, trim nails and the magnet trick — plus how to use a stud finder, and what to do for ceilings and plaster. Find a stud and screw into it; if you can't, use an anchor. What drill bit for metal?HSS at minimum, cobalt for stainless — plus the 118° vs 135° point that stops the bit skating, and the speed and cutting fluid that keep it alive. What drill bit for what material?Wood, metal or masonry — how to tell the three bit types apart at a glance, why each is shaped the way it is, and which drill each one needs. What drill bit do I need for concrete?The right bit and drill for concrete, brick and block — carbide + hammer drill, the shank rule, and why the size follows the anchor. Why won't my drill bit go into concrete?Bit not cutting concrete? Usually the drill isn't hammering — plus the wrong bit, a worn one, a dust-packed hole, or hitting rebar. How to tell which, and the fix for each. Stripped screw hole in sheet metal?A self-tapping screw that spins and won't tighten. How to tell a stripped head from a stripped hole, and the in-scope thin-sheet fixes — bigger screw, rivnut, bolt-through, relocate, or epoxy for light duty — ranked by how much each holds. Hit rebar drilling into concrete?Drilled into concrete and hit steel? Almost always, shift the hole over to clear the bar. How to tell it's rebar (not a stone), the rotation-only method if you must go through, and the line that matters: never cut post-tension.