Hello dialmakers: The past few years, the local garden centers have been selling rounded smooth river rock that have single supposedly inspiring words engraved on each one (Like "Light" or "imagine" for example). The quality of engraving is good, much like tombstone engraving. The manager told me that they were engraved by laser. Tombstones are also engraved by laser, I've been told.
I don't know how thin the lines can be done or if there is any control over cutting depth. I once asked the local tombstone maker if I brought him a drawing of a sundial could he have it laser engraved? He said sure, for 600.00 dollars! I thanked him and left. John Carmichael p.s. I'll be on vacation till Monday, so won't answer e-mails till Tuesday.
