Laser Head TRIALS for laser etching

thingiverse

This is my maiden attempt to create a laser etching head that I can attach to my 3D printer and use to laser etch various items. The concept is to utilize low-power laser modules that I purchased via Amazon (10 for $2.50 Euros, or 25 cents each) by combining them into a focused beam with sufficient power to burn objects. Each module has a rating of 35 milliwatts, so with 10 modules, I achieve 350 milliwatts at the convergence point. I chose a focal length of 5 centimeters (50 millimeters) and created a holder for all ten laser modules using mathematical calculations, which resulted in a holder that accurately positions the laser modules. These affordable laser modules do not always have their beams coming out precisely from the center, with some being significantly off. To ensure each individual laser module is focused to a point, I built a jig with a target and adjusted the laser focus (achieved by twisting the casing at the back of the module) so that each module perfectly focuses at the 50-millimeter point. Then, I fitted the modules to the mount and temporarily connected them all together. The next step is to align all the lasers on one spot. Part 2 will involve creating a temporary mount to hold the assembly while I adjust each laser and secure it in place (files will be uploaded once I design and print the mount). Part 3 will be installing the assembly onto my FlashForge Finder below the existing print head, including a mounting system that fits to the nozzle to accurately position the structure. Part 4 will involve modifying the G-code to ensure the extruder is turned off and the height is adjusted correctly for burning - this will require manual intervention. Part 5 will be developing an automated script to perform the modification. Part 6 will showcase the laser etching head in action (if it functions as intended). Wish me luck.