Air Assist Clamp and Cap.

thingiverse

Air Assist Clamp and Cap for K40 style 40W Chinese blue and white CO2 laser. The clamp and cap hold a 1/4 inch OD tube securely in place, accommodating different diameters by allowing you to choose the best friction fit from two available caps, one of which is .5mm larger. Screw holes on top measure 4MM and require drilling out slightly at the sides for easy installation using standard drill bits. You'll need these steps: Print the required parts accurately. Secure a length of 1/4in OD thin wall copper tubing in your possession. Insert the pre-fabricated cap onto one end securely. Initiate test firing on some readily available material to locate the precise spot where a perfect dot will be achieved after precise calibration. Carefully position the capped tube, secured firmly by clamp in place within the air assist mechanism, with the tapered end pointed at the calibration mark. Install and attach an easily sourced air source to complete this straightforward setup process.