I am attempting to laser engrave stainless steel powder coated Bottle Openers.  My issue is not knowing the best power and speed to run these at.  The residue that is left can be quite difficult to remove.  I have found that alcohol helps with the removal and have see videos on YouTube for a product called “Blu” which is on its way.  My biggest question is what is the best power and speed for this project.  I have also done the wallet bottle openers with no issue and alcohol cleans these up nicely.  But when I use the same power and speed for the other bottle openers, I don't get the same results.  Please help!!

Thank you in advance!!