Quick, what’s 360 divided by 23? It’s easy enough to get the answer, of course, but if you need to machine a feature every 15.652 degrees around a shaft, how exactly would you accomplish that? There ...

An axleshaft’s overall strength is determined by what Randy’s Ring & Pinion calls DMD: diameter, materials, design. We’ll start with materials. Most readers know that steel is a generic name for ...

For years the proprietary spline pattern of rc servos has been a dealbreaker for hobbyists who want to add custom shafts and gears to their servos. First, different servo sizes have different spline ...

Contributor Mark Grizotsky has developed another timely insight: “When tool-designers develop roughing hobs for milling roughing straight-side spline shifts, they must remember this about the wear of ...