Center drill types, center drill angle, and applications
Center drill types, center drill angle - what is used where A center drill is used for drilling a hole on the axis of a shaft to hold it between... Read More
CNC milling tool selection
Floating tap holder in CNC machining
CNC – Why do we use a floating tap holder What is a floating tap holder What is a floating tap holder Where is it used in CNC machining What... Read More
End mill helix angle selection
CNC: End mill helix angles – how do they matter The cutting force on an end mill has a radial and an axial component The radial component tends... Read More
BT holder on CNC machining centers
CNC – BT holder taper on machining centers The BT system is a more evolved version of the CAT taper (named after its developer, Caterpillar in... Read More
CNC milling holder tapers
CNC: Milling holder tapers (the story behind the names BT30, CAT40, etc) The taper used generally used is the NMTB, also called NMT or NT It was... Read More
Modular tooling system in CNC machining – what is it ?
What is a Modular tooling system, and how does it reduce tooling cost A Modular tooling system enables you to assemble tools from a set of... Read More
CNC milling: Heat shrink holder
CNC – Heat shrink holder The heat shrink holder has a cylindrical bore which holds a tool with a cylindrical shank, like a side lock holder The... Read More
Tool life definition – what is tool life in CNC machining ?
Tool life definition – it’s not when the tool breaks Tool life definition: Tool life is the duration of actual cutting time after which... Read More
Insert drills – how they work, and applications
CNC: Indexable insert drills – why and how you use them Insert drills have a hardened steel body (hardness approx 50 HRC) with inserts at the end... Read More
Cutting tools – Moh’s scale of hardness
CNC – Mohs scale of hardness and cutting tool materials When a cutting tool cuts a workpiece, it is basically a scratching of one material by... Read More