CNC repair gantry square From time to time a CNC gantry moves out of square and needs to be readjusted back into alignment.  Older machines tend to have one motor driving the gantry up and down the long axis, but with the reduction in pricing of motors, most new routers have two driving motors. This causes [...]

What kind of accuracy to expect from a CNC router Even on less expensive CNC routers achieving high accuracy is possible. Whether your CNC is using open-loop stepper motors, hybrid steppers, full closed-loop servo motos with encoder feedback achieving high accuracy of +/- 5 thou (0.005 ") is possible. Anything less than 5 thou would [...]

CNC backlash & how to solve it What is CNC backlash CNC backlash is a mechanical looseness and play between components and the transmission system of a CNC router. Most notably gearbox, belt, rack and pinion, or ballscrew. The backlash would create circles that are not fully round with jagged edges or oval shape and [...]