LaserCutter Air Assist for Line Lasers with vertical airflow

thingiverse

I snagged some dimensions off of the @kingbubbatruck STL design for most of it and threw it together in FreeCAD. I didn't like the angled air assist because it misses the workpiece unless it's at exactly the right height. I'm new to lasercutting, but guessing you'd want to match the air assist nozzle height not far from the laser focus point for optimal assistance, but opted here to just keep the nozzle short. I added a simple airflow channel and a tapered nozzle to direct airflow onto the workpiece vertically. The line laser mount dimensions are a little too tight, but I ended up forcing the lasers in and leaving the design as-is. I printed it with the nozzle side down and used supports everywhere touching the build plate. If supports were added everywhere the internal airflow channel would be blocked and very hard to remove. If printed upside down, several of the steps wouldn't have support, and would be frustrating to clean support material from. I printed with 100% infill, which was certainly overkill. I added hot glue to stabilize everything once it was set. It's not pretty. The mount on the K40 without the hot glue seemed a bit loose. The line lasers are cheap ones similar to this model: WYTP11-LA2-New. The line lasers have an adjustable focus that rotates the lines as they focus. The adjustment is loose, but I applied hot glue there as well so the vibrations don't knock it awry. I included the FreeCAD if anyone wants to make multiple nozzle lengths, or tune the dimensions.