Anyone who wants to learn the technique of thread chasing only needs a single pair of chasers to start with, in addition to a lathe whose spindle speed can be reduced to between 200 and 400 revolutions per minute. These comparatively low entry costs, which can be reduced even further by making suitable tool books yourself, are undoubtedly offset by a more or less long training period that depends on the skill and patience of the person doing the work! Once chasing is mastered safely, it fits seamlessly into the rest of the manufacturing process.
There are no setup times such as those required for thread milling. And in contrast to thread cutting, where different tools are required for each nominal thread diameter, a pair of chasers can be used to produce threads with a wide variety of nominal diameters. Even for left-hand threads, no special chasers are required! In the catalogs of turning supply centers you can usually find chasers from English manufacturers (CROWN, SORBY) with inch pitches of 10TPI, 16TPI and 20TPI. TPI means Threads Per Inch. The larger the number, the finer the thread! A chaser with a fine thread is recommended for practice. However, coarser wooden threads look more spectacular and offer more possible applications. So I decide on the happy medium and choose 16TPI. In the section: “It’s best to order now!” The catalogs also offer a groove iron for undercutting the internal thread, but I have already made that myself Nuteisen zum Hinterstechen des Innenewindes. A measuring gauge is intended to help you find the right core diameter for a specific nominal diameter. It's too expensive for me compared to its usefulness! And an auxiliary edition is also on offer. But if necessary, an existing turning knife also fulfills this function.
