That "affect" (if you like it) was achieved by engraving the perimeter with a 2 pass giving a depth of about 1.5mm.... giving what you call a two layer affect... by luck and not choice/design.
SplinterGroup ..... no longer sell the "miniatures" of alcohol in local gas stations any more .....
Probably my legacy from too many "fill me up" visits.
I remember the days as a kid (high school) when I would sneak out at night, gingerly through the noisy venetian blinds (my old man was a tough task master and insisted on curfews) and went to the Saturday night dance at the local town hall. I took a small bottle of Bundie (Bundaberg rum that I bought through one of the many dodgy outlets in Warragul - my hick hometown then). After 1 drink, I could dance like Fred Astaire... after 2, I floated... after 3, I was anyone's... any more and I was chased by the local cops... but there was enough left in that small bottle to share, so they drove me home... bastards, the girls were still at the dance and I had to crawl back through those blinds... pissed!
Ah the memories... and there was that Mutiny on the Bounty!
If your first cut is too short... Take the second cut from the longer end... LBD