Here's my situation - I have a Chrome Harley Davidson fuel tank console. My customer want's his fireman's patch etched on it. I am practicing on a chrome sink disk of some sort. I sprayed the marking agent on let it dry hit the product at 100 power 10 speed, rinsed off the agent and not a dot on the practice piece. My understanding is that the chrome may have a clear coat on it which cannot be lasered through, true? We have a Vy-tek Fx2 35 Watt Laser. I would appreciate any and all input, thank you very much!