Done with layers
Try using masking tape over the wood before engraving, should cut down on the black smudges
Were printing this one out for the OpenBuilds art wall! Awesome @Ariel_Yahni_UniKpty
You wil havw more examples @Mark_Carew_OpenBuild once the test rig is complete, both laser and CNC milled Aluminum and CNC routed wood.
Denatured alcohol will clean up the smoke stains… give it a light sanding with some 200+ grit sand paper after and the image will pop 