You can control the depth of the thread very accurately.No need for expensive tension and compression tapping heads.Oh and you don’t need to remeasure the tap if you replace it. These make it easy to change and it can’t spin. They are no different to holding in a chuck but you get to use collets for holding the tap. You can buy tapping heads specially for this. The machine spindle locks in with the feedrate just like when you are screw cutting. It can be held in a chuck just like an endmill or a drill. Rigid tapping means the tap can remain rigid throughout the tapping cycle. You mean you didn’t know? Well the first step is admitting you didn’t know. All you need is a bit of knowledge and the right equipment and it’s a dream, an absolute pleasure. Let’s face it tapping on a CNC Machine can be a “right pain in the arse” as we say in the Midlands.
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