How tools actually work, and how to choose one
Find Tool Editorial Team 
A chisel’s back needs to be flat because it works as the reference surface for both sharpening and cutting. A flat back lets the bevel meet it at a true, consistent edge, and lets the chisel ride flush along a flat surface — like the bottom of a mortise — instead of rocking or digging … Read more
A strop is a strip or pad of leather, fabric or hard felt, usually loaded with a fine abrasive compound, used to polish and realign a cutting edge after sharpening. It does not remove metal the way a stone does — it refines the edge a stone leaves behind, and it wipes away the microscopic … Read more
Sharpening removes metal to create a new edge on a blade that has gone dull, chipped or rounded over. Honing is the lighter, more frequent step of refining and realigning an edge that is already basically sound. Sharpening rebuilds the edge; honing maintains it between full sharpenings. What is the actual difference between honing and … Read more
A sharpening stone’s grit is a measure of how large or small the abrasive particles bonded into its surface are. Coarse grit has large, widely spaced particles that remove metal quickly but leave deep scratches. Fine grit has small, closely packed particles that remove less metal per stroke but leave a smoother, sharper edge. What … Read more
A carbide tip is a small piece of tungsten carbide — a metal-and-ceramic compound far harder than ordinary steel — brazed onto the cutting edge of a blade or bit. It costs more because that material is expensive to make, harder to shape, and lets the tool stay sharp through far more cutting than steel … Read more
Tooth count changes how fast a blade removes material and how smooth the cut edge is. Fewer teeth clear waste quickly but leave a rougher edge and can chip delicate faces; more teeth cut slower, cooler in fine material, and leave a cleaner finish, but bog down faster in thick, rough stock. It’s one of … Read more
A saw blade goes dull mainly from heat and friction, not simple mileage. Cutting resinous wood, hitting embedded grit or nails, feeding too slowly, and letting pitch build up on the teeth all raise the temperature at the cutting edge, which wears or micro-chips it faster than clean, well-fed cuts through the same material ever … Read more
Drill bits stop cutting because the cutting edge has actually worn away, because heat has softened that edge, or because the flutes are packed with material and the bit is rubbing instead of cutting. Wrong speed, wrong bit for the material, and too little downward pressure all speed this up. It is rarely one single … Read more
Workshop humidity rusts unprotected steel tools by letting moisture condense on their surfaces, and it makes timber swell, shrink, cup or twist as wood fibres absorb or release water. Both effects are slow, mostly avoidable, and worse in workshops that are unheated, poorly ventilated, or built onto a damp floor. Why does humidity affect tools … Read more
Tools rust when bare metal is exposed to moist air for long enough for oxidation to take hold. Stopping it means doing three things: keeping metal dry, keeping a barrier between metal and air, and storing tools somewhere the temperature and humidity don’t swing wildly from day to night. Why do tools rust in a … Read more
About what you read here. Everything on Find Tool is general information and our own editorial opinion. We research carefully and we say when the evidence is unclear, but we can be wrong, things change, and no article can know your particular situation. Please do your own research and make your own judgement rather than treating anything here as the final word. Prices, products and specifications around tools and workshop equipment change constantly, and what suits one person will not suit another. Check current details yourself, and where a decision involves real money, safety or something you cannot undo, it is worth confirming with the manufacturer, or a qualified electrician or tradesperson before you act.