Guides
Practical notes on choosing, fitting and looking after driven tools, written for the people who run the machines.
Identify your turret
BMT or VDI, and which size? How to tell without taking anything apart.
BMT vs VDI
How the two turret interfaces differ, and what that means for rigidity, set-up and the tools you can fit.
Choosing ratio and coolant
When a speed-up or reduction ratio pays off, and when internal coolant is worth it.
Driven tool servicing
Signs a driven tool needs attention, and how servicing keeps it running true between rebuilds.