check to see if there's an engraver near you that would let you try the unit they have. as for the learning curve, i t took me nearly 3 years before i could even consider giving something away, let alone having the stones to charge for it. i'm not alone: many here learned the hard way before the...
complain to the manufacturer. i'm sure they will jump thru hoops to solve yer problem. oh, by the way, did you learn anything ? not being unkind here, but price and quality usually are bedfellows.
i'd go to a local gunsmith and see what your local laws may be regarding such a sale. the laws vary from one place to another, so be safe and legal. find out from those in your area.
since you dont have an ffl, the sale would have to be done thru a dealer or somebody with an ffl that would be...
bichwood casey is worth a try. you will want to pursue a chemical known as selaneous acid. this is commonly used by machine engravers. not sure of specific brand names.many engraving supply houses sell "oxidizers". these are almost always of selaneous acid. the acid isn,t deadly to handle. it is...
welcome to the forum. not too many] of us work glass such as you do. i'm an exception; i do laser, sandblasting, and now and then do rotary on all sorts of glass, including mirrors. don't be shy. send a few fotos of your recent pieces.
if rotary engraved the paint (rustoleum flat black) will work nicely. if done by diamond drag, i'd try cold blue found in most gun stores. if the cold blue oxidizes the metal, then diamond drag would work well. this would be an experimental situation on the stainless. good luck. let us know how...