I have been working with lasers for 5 yrs now starting with a Neje 20w, Neje 30w, Neje 40w and finally over to a Atzer 24w laser. I understand Atzer is now out of business so will move to a CO2 laser when this one dies on me. I have used this site many times in the past and have always received GREAT SUPPORT. THANK YOU to the Admins!