I had engraved a bunch of serving/cutting boards for a client, but after delivery I was told the engraving was done too deep. So I'm playing around with the settings, but I can't seem to find the right ones... Basically what I'm looking for is a balance between a shallow engraving, but still relatively dark. I'm using a Hans Yue Ming CO2 laser and I use the SmartCarve software that came with it. Would anyone be able to assist?