Modified prusa i3 x-carriage with Laser support

thingiverse

I added a J Tech 2.8 Watt Laser Diode to my Sintron Prusa I3, which has opened up a world of new possibilities for creating precision cut designs with intricate details. First things first, it's essential to note that mounting the laser 100 MM above the print bed might not be optimal due to limitations in laser accuracy, especially at close range. I decided to experiment with mounting it higher, around 30 MM or even further up if necessary, to create space for both the laser and my 3D printer to work together seamlessly. In preparation for future modifications, I designed a new sensor mount that allows me to move the level sensor to the back of the x-carriage for more central positioning in the x-y plane. This modification has one caveat: it can restrict Z-axis movement by around 15 MM at the top end, and potentially limit X-axis travel depending on the specific frame design. Speaking of my Sintron Prusa I3's capabilities, a recent experiment saw me create a precise laser-cut gear out of 1/8 inch thick Bassword using just four passes at a moderate 2 AMP setting with 50% speed and one pass at full capacity. This project highlights what can be achieved with a well-crafted setup. Here are the step-by-step instructions for building this laser engraving module: Step One: Purchase a suitable Laser Diode from JTech, complete with a reliable controller, available at http://jtechphotonics.com/?page_id=1503. Step Two: Design and print an x-carriage specifically designed to hold both the laser diode and my MK8 extruder. I opted for PET filament, which performs remarkably well in this application. Step Three: Connect the laser controller directly into Ramps 1.4's Fan output via D9 for smooth control. Step Four: Install the new carriage and securely mount the Laser Diode in place. Step Five: Calibrate the Laser diode to ensure optimal focus at the lowest possible amperage setting. Step Six: Determine the precise x-y offsets required for G-code compatibility, considering any offset discrepancies between the extruder's print head and laser placement. Finally, it's crucial to acquire high-quality SVG files specifically tailored for engraving and cutting using tools like InckScape. Utilizing their built-in gcode plugin streamlines output into actionable, precise instructions that your printer can seamlessly follow.