First the tests in brass - with 30microns hatch-spacing and 10x ablating it will "engrave" 0,3mm deep:
... in ceramic it's a bit more effective - same parameters and 10x engraving will remove 0,6mm:
Cleaning metal surfaces with marking laser ...
Re: Cleaning metal surfaces with marking laser ...
... here some samples of "micro-machining" - did tests with varying hatch-densities and repeated engraving in brass and a multi-layer ceramic part.
First the tests in brass - with 30microns hatch-spacing and 10x ablating it will "engrave" 0,3mm deep:
... in ceramic it's a bit more effective - same parameters and 10x engraving will remove 0,6mm:
First the tests in brass - with 30microns hatch-spacing and 10x ablating it will "engrave" 0,3mm deep:
... in ceramic it's a bit more effective - same parameters and 10x engraving will remove 0,6mm:
Viktor
Re: Cleaning metal surfaces with marking laser ...
... not precise/fine enough to make own coins, but good for some laser-"engraving" and "drilling" 
Viktor