Print the x_positive and x_negative switch mounts. This is the easiest axis to add endstops. Remove the linear rods from the carriage assembly for now. Remove the M5 bolts holding the 10mm linear rods for the x axis and the spindle carriage should drop out of the machine. Keep turning the x lead screw to unthread it from the spindle carriage and remove it from the machine. Disconnect the x leadscrew from the x stepper, turn the x lead screw so that it moves away form the x stepper and pokes out the left side. Unplug the spindle motor and z stepper from the control board.

While the parts are printing the 3018 pro needs to be dissembled slightly to make installation of the hardstops easier. No supports are needed as long as you print the parts as they are oriented in the STL files. These parts are not seeing much load so the settings are not critical but I highly suggest printing these parts with PETG, it is a better material for mechanical parts like these. For print settings I used 3 perimeters and 3 top/bottom layers, 15% gyriod infill, and PETG filament. The source FreeCAD files have also been uploaded. I have uploaded all the STL files ready for 3D printing to Thingivers, PrusaPrinters, and GitHub. Wherever you get them you will need at least 6 but get a few spares just in case.

Some of them may not be actual Omron switches but it is the form factor that matters. Lower cost versions of these switches can be purchased from the usual low cost component suppliers such as AliExpress, eBay, and LCSC. The Switchesįor limit switches I chose the Omron SS-5GL2 mainly because I had enough of them on hand. While not required for use I wanted to add endstops to enable homing and as a safety for making sure the 3018 pro does not try to go outside of its bounds. The CNC 3018 Pro Router (called 3018 pro for the rest of this article) does not come with endstops. Sam Perry on CNC 3018 Pro Router: Adding…

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Cnc 3018 grbl settings