I don't know what happens if the laser strikes it with pressurized air flowing. You either get a blow torch or the laser just creates a hole. The laser is not tightly focused so the beam is wide and dangerous.
Bart "If you didn't build it, you will never own it."
I believe that I may have one of he BDRING nozzles hanging around somewhere that is not going to be used. I do a lot of engraving using a 25.4 lens and the nozzle is too long to be used. I did have to shave off a small amount on one side so it would clear one side of the laser gantry. But it is fully functional. PM if you are interested.
Guess I was too late again. Lol. I tried PMing but I'm new to the boards so I'm not if it went through. If you guys find anything please let me know. Thanks again Bernie & Milt