I quickly calculate proper tap-drill diameters using this simple formula. Tap-drill diameter equals nominal diameter minus thread pitch. I quickly calculate proper tap-drill diameters using this ...

EMUGE-FRANKEN USA – manufacturers of high-performance taps, thread mills, end mills, drills, gages and other rotary tools – introduced TIN-coated gages to its line of precision thread gages. The new ...

For any sort of precision machine, precision adjustability is required. For the hacker this usually involves an adjustment screw, where the accuracy is determined by the thread pitch. This was not ...