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First, I loaded the G-code file that makes the engravings on top of Tux. After it's installed, access CNCjs in a web browser and connect it to your Arduino GRBL controller.Ĭlick Upload G-Code and specify the file you created with jscut. CNCjs is web-based, easy to use, and supports interfacing with GRBL controllers. I used jscut twice to generate two different G-code files: one to make the engravings with the smaller bit and another to cut out Tux's outline with the larger bit.Īfter you create the two G-code files, the next task is to get CNC controller software. To create Tux, I needed to use two different bits: a smaller bit to engrave details like the eyes, nose, and mouth, and a larger bit to cut Tux's outline all the way through the wood board. One limitation of jscut is you can't specify different bit sizes for different operations. Set the properties of your cutting bit under the Tool section these include specifying the diameter of the bit and how fast the cut should be made. Generating the Tux CNC G-code with jscut. The first step toward making a wooden Tux is downloading a black-and-white version of the logo in PNG format from Wikimedia Commons.

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Along with Fedora as my base operating system, the other pieces of open source software I used are GRBL, Inkscape, jscut, and CNCjs.įor this tutorial, I'll explain how to create a CNC-milled, wooden version of Larry Ewing's Linux Tux logo. Instead, I'll focus on the open source software that can be used to create designs for and run the CNC machine.

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I won't go into details on the CNC hardware assembly, as Nikodem has a series of videos that explain it in detail. The GRBL website has documentation for loading GRBL onto the Arduino board.

The machine has one stepper for the Z axis (up and down), one stepper for the X axis (left and right), and two steppers for the Y axis (backward and forward). The GRBL controller receives CNC G-code (a text-based list of instructions for the CNC mill) and translates it into motion by driving the stepper motors. The CNC machine is built on an Arduino controller running the open source GRBL motion-control software. In the meantime, I 3D-printed the other parts. They shipped from overseas, so some of them took about a month to arrive. I ordered the necessary parts and started the wait.

Its creator, Nikodem Bartnik, has a list of parts on the project's Thingiverse page along with links to download the 3D printed parts' STL files. While many of this CNC machine's components are 3D printed, several parts must be ordered to make it work. Unlike other milling tools, CNC machines can move on three axes: the Z axis moves vertically, the X axis moves horizontally, and the Y axis moves backward and forward. When I saw that the machine works with open source software and the controller is an Arduino running open source software, I knew I had to make one.ĬNC milling machines are precision cutting tools used in creating dies, engravings, and models.

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When I recently saw a new design for a computer numeric code (CNC) milling machine that mostly uses 3D printed parts, I was intrigued.

I'm always looking for new projects to create with my 3D printer. There is nothing seen in a gcode visualizer that will help with this process either.

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There is always a Trial & Error period for each user before they achieve any successful results. Nothing is perfect because there are so many other variables that effect the laser photo engraving’s outcome like your focal point size, Pixel Resolution (step over), feedrate, min/max laser power values and the material your engraving on. I use it quite often when I’m editing an image. In the PicLaser image editor there is a Preview Gray Scale selection that gives you a general idea what your laser photo engraving will look like from a color image. Load it in UGS and and rotate the visualizer to an isometric view plane (if that is possible) and you will then be able to see the depth variances based on the shades in your image. Change the Laser Control Command to a Z and the Max Laser Value to a -.125 and generate the gcode again. The UGS visualizer does not recognize S commands, so the view will only be a X&Y plane.