hello! should the negative/invert button be green for glass led engraving ?Capture|295x500
Yes for glass I invert my image.
shoud the check box be green or red?
Green means go, or ON.
lol ok im trying to photo engrave on glass i have a 60w co2 so i have negative enabled any recomended power/speed settings to start with ?
Some have found this valuable data to start with. 
thank you for all your help sir
You are welcome. If you would please, update your profile to provide your machine / controller / firmware / OS info. This will help all of us provide the most appropriate responses for your setup.