This is a knurling tool. Its purpose is to press patterns onto metal to improve grip or surface texture. A straight knurl makes parallel lines, often used on knobs and handles. But when you switch to a toothed rolling tool, the metal can be pressed along a thread path to form the actual threads on bolts — a process called thread rolling, which makes the threads stronger and more durable than cutting. | Great leader

199K views · 530 reactions | Push knurling without tailstock support? Watch that deflection �Knurling puts serious side load on the part—without backup, things start to bend fast. Always support long or thin stock to keep your pattern clean and your part true. A scissor style knurler would be a better option if no tailstock support is an option. #Knurling101 #LatheTips #MachinistLife | High Caliber Craftsman Builds | Facebook

The History of Knurling on the Lathe 🌀🔩 Knurling dates back to the early days of the industrial revolution — a simple way to add grip without cutting threads. From steam engines to handwheels, this pattern has been rolled into metal for over a century. Still functional. Still beautiful. #KnurlingHistory #LatheWork #MachinistHeritage | High Caliber Craftsman Builds

101K views · 901 reactions | Knurling Knurling is a great way to...