CNC Workshop
Practical CNC guides built from real support questions and hands-on experience. Explore spindle selection, controller compatibility, troubleshooting, upgrades, maintenance, and more from the PwnCNC team.
CNC Dust Boots for ATC Spindles: Clearance, Bristle Length, and Compatibility
Learn how to check CNC dust-boot clearance around ATC hardware, choose the right bristle length, trim brush material, and route...
How to Add Dwell Before Cutting With a CNC Spindle
Learn how to add a spindle-on delay before cutting, configure $392 in gSender, use G4 dwell commands, and prevent movement...
Closed-Loop Stepper Motors and Z-Axis Brakes: Are They Worth the Upgrade?
Learn how closed-loop stepper motors detect lost motion, why Z-axis brakes prevent spindle drop, and what to verify before upgrading...
ATC Spindle Troubleshooting: Drawbar Errors, Sensors, and Tool Release Problems
Troubleshoot ATC spindle drawbar errors, failed tool release, sensor faults, air-pressure problems, MASSO inputs, wiring, and tool-present alarms.
Why Is My CNC Spindle Running at the Wrong RPM?
Is your CNC spindle running too fast, too slow, or refusing to go below a certain RPM? Learn how to...
CNC Spindle Cooling: Coolant Choices, Chillers, Winter Storage, and Leaks
Choosing the right CNC spindle cooling system depends on coolant, shop temperature, job length, airflow, and maintenance. Learn when to...
How to Connect a CNC Spindle to Buildbotics, LinuxCNC, Mach4, or Sienci Controllers
Learn how to connect a CNC spindle to Buildbotics, LinuxCNC, Mach4, or Sienci controllers using PWM, analog, or Modbus/RS-485 control.
Water-Cooled CNC Spindle Troubleshooting: No Flow, Weak Flow, or Airlocks
Is your water-cooled CNC spindle showing no flow, weak circulation, or trapped air? Learn how to check the pump, tubing,...
