I designed this model to hold a permanent marker on my cnc machine to draw the traces of my custom circuit boards. I added a spring to keep consistent pressure. Without it, the board may not be 100 percent level, causing the pen to be too far away or too close and risk breaking to tip.
You don't have to use this just for circuit boards. You could also use this to draw art.
Watch the video. I put a lot of time,effort, and detail to show you how to assemble and use this device. Thank you for watching!
Every printer is different so this may require some light sanding since the marker needs to move back and forth with little friction.