CNC 3018 Pro Upgrades

thingiverse

I bought SaintSmart CNC 3018 Pro in high hopes. My initial plan was to mill PCBs with it, but my first attempt was a disappointment. I then turned to engraving plywood and saw some improvement. However, when I used the machine, I noticed excessive vibration from the Z-axis and bearings that were loose due to oversized holes. I tried using screws to secure them, but this solution didn't work during PCB milling. My CNC's problem: https://youtu.be/HUETNqpFnL0 <iframe width="560" height="315" src="https://www.youtube.com/embed/HUETNqpFnL0" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> I redesigned the X and Z axis parts, utilizing my machine's existing components without requiring any new materials. Note: I broke my machine's plastic parts while installing backlash nuts. You can see photos above. I sanded the parts and applied oil-based lubricant (WD-40) to ensure proper bearing fitment. PS: This project is currently in progress. My next plan involves designing an electronic card box, incorporating a height map for leveling PCB surfaces. I intend to add a headphone jack for the auto-leveling probe and an on-off switch for the spindle later. I have uploaded SolidWorks files for editing purposes. UPDATE v.1.1 ------------------ I created a new Z-axis and spindle carriage part that matches the original design, eliminating the need for screws to secure it. This is still untested. UPDATE v.1.2 ------------------ Improved X-axis performance. UPDATE v.1.3 ------------------ * Designed Cronos Maker CNC Control Card v.1.1-based card box. * Added an Emergency Stop Button box with a 28mm arcade button. * Installed a 3.5mm female jack for the probe. UPDATE v.1.4 ------------------ * Added a case for the Woodpecker CNC control card, although it hasn't been tested yet. * Installed a 40mm fan on the box cover. * Included a circuit diagram.